Business statistics 2
Question one
a) The table below gives the interest rates of government bonds sold over a period of 12 months.
Month Interest rate (%) per annum
January 11.5
February 11.3
March 11.4
April 11.6
May 11.8
June 11.7
July 11.8
August 12.5
September 12.0
October 11.7
November 11.6
December 11.6

Required
i) Develop 3-month and 4-month moving averages for this series. (8 marks)
ii) Which moving average provides better forecast? Why? (2 marks)

QUESTION TWO
a) A bakery bakes cakes under the brand name “super cakes.” Irene Juma, the manageress does not know the cost of each cake. She therefore gathers data on the total cost of each day’s production for the last 10 days. The results are shown in the table below:
Day Number of cakes (‘00’ units) Total cost (Sh. ‘000’)
1 22.5 23.0
2 21.0 21.6
3 27.5 23.3
4 21.5 24.0
5 30.0 28.2
6 20.0 22.4
7 24.0 23.1
8 26.5 25.3
9 18.3 20.1
10 17.0 16.5
Required:
i) Estimate the total cost function using the ordinary least squares method. State the fixed cost and unit cost. (11 marks)
ii) If each cake is sold at Sh. 10, determine the break even number of cakes. (3 marks)

b) Two different models are available for the same machine. The production statistics (number of units produced per hour) of these two models are given below. The data was collected on different days.
Model A: 180, 176, 184, 181, 190, 137,
Model B: 195, 194, 190, 192, 187, 185, 187,
Will you conclude that Model A and Model B have the same productivity (6Marks)

QUESTION THREE
The table below shows data on the number of visitors (V) to the Kenyan coastline in a month and the amount of money (M) for each of the 8 months in 2018
Number of visitors V Amount of money spent M (Sh.’M’)
2450 1370
2480 1350
2540 1400
2420 1330
2350 1270
2290 1210
2400 1330
2460 1350

Required
a) Determine the product moment correlation coefficient between number of visitors and amount spent. (4Marks)
b) Give a reason to support fitting a regression model of the form M = a + bv to these data
(2 marks)
c) Find the value of b (4 Marks)
d) Find the equation of the regression line of m and v (4 Marks)
e) Interpret your value of b (2 marks)
f) Use your answer to part (d) to estimate the amount of money spent when the number of visitors to Kenya coastline in a month is 2500. (2 Marks)
g) Comment on the reliability of your estimate in part (f). Give a reason for your answer.
(2 Marks)

Answers

Answer 1

Here are the 3-month and 4-month moving averages for the interest rates of government bonds:

The Moving Averages

Month 3-month moving average 4-month moving average

January 11.433333333333335 11.525000000000002

February 11.6 11.625

March 11.6 11.724999999999998

April 11.699999999999998 11.95

May 11.766666666666666 12.0

June 12.0 12.0

July 12.0 11.950000000000001

August 12.1 11.725

September 12.066666666666668 11.633333333333333

October 11.766666666666666 11.6

November 11.633333333333333 11.6

December 11.6 11.6

The 3-month moving average is the average of the last 3 interest rates. The 4-month moving average is the average of the last 4 interest rates.

Recent data makes the 4-month moving average a better forecast. The 3-month moving average is more volatile.

For July, the 3-month moving average is 12.0, higher than the interest rate. The more accurate July 4-month moving average is 12.0.

Because it uses more recent data and is less volatile, the 4-month moving average predicts future interest rates better.

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Related Questions

9. Is it ever okay to argue or disagree with your boss? Why?​

Answers

Yes, Is it ever okay to disagree with your boss in a case whereby the ethics of the organization is not followed.

What is ethics?

As it investigates what is morally right or wrong, just or unjust, ethics looks at the intellectual justification for our moral judgements.

The study of ethics, often known as moral philosophy, "involves systematizing, defending, and endorsing conceptions of good and bad action," according to Wikipedia. Axiology is a subfield of philosophy that consists of the fields of ethics and aesthetics. These fields are concerned with issues of value.

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Sooraj works as a salesman in a company selling pet accessories and food. He has been given a target of selling 1200 units of the food packets in a month by offering a maximum of 10% discount to his customers. In order to meet his monthly sales target, on the last two days of the month, he offers 15% discount to his customers.
In the context of the above case, is Sooraj effective in his work? Explain by giving a suitable reason in support of your answer.

Answers

Yes, Sooraj is effective in his work as a salesman in selling pet accessories and food.

He has been given a target of selling 1200 units of food packets in a month by offering a maximum of 10% discount to his customers. In order to meet his monthly sales target, on the last two days of the month, he offers a 15% discount to his customers. There are many reasons to support the effectiveness of Sooraj as a salesman.

One of the primary reasons is that he has been able to achieve his monthly sales target by offering a maximum of 10% discount to his customers. This indicates that he is able to effectively communicate the value of the pet accessories and food to his customers, and is also able to offer a discount that is appealing to them.

Secondly, Sooraj is also effective because he is able to identify when he needs to offer a higher discount to meet his monthly sales target. By offering a 15% discount on the last two days of the month, he is able to entice more customers to purchase the pet accessories and food packets, thereby increasing his chances of meeting his sales target.

In conclusion, Sooraj is effective in his work as a salesman because he is able to achieve his monthly sales target by offering a discount that is appealing to his customers. Additionally, he is also able to identify when he needs to offer a higher discount to meet his monthly sales target.

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QUESTION 11
Whether targeting consumers or resellers, marketers need to focus on:
O Buying center synergy.
O Corporate profit sharing
O Reducing derived demand
O Creating value for their customers

Answers

Marketers need to focus on creating value for their customers. The Option D.

Why is creating value for customers crucial for marketers?

Creating value for customers is crucial for marketers as it directly impacts customer satisfaction and loyalty. When marketers prioritize creating value, they focus on understanding customer needs and preferences, developing products or services that meet those needs and delivering exceptional customer experiences.

By doing so, they differentiate themselves from competitors, build strong customer relationships and drive business growth. When customers perceive value in what a company offers, they are more likely to make repeat purchases.

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In strategic planning, what components would you consider necessary for creating a strategic plan? Using your chosen company for this course, explain what components they use and whether they do a good job of communicating their plan to their workforce.

Answers

In strategic planning, several components are essential for creating a comprehensive strategic plan. These components include:

Vision Statement: This articulates the long-term aspirations and goals of the organization, providing a clear direction for the future.

Mission Statement: The mission statement defines the purpose of the organization, its core values, and its primary objectives. It helps guide decision-making and ensures alignment with the organization's overall goals.

SWOT Analysis: Conducting a thorough analysis of the organization's strengths, weaknesses, opportunities, and threats (SWOT) provides a holistic understanding of the internal and external factors influencing the organization's strategic decisions.

Goals and Objectives: These are specific targets that the organization aims to achieve within a defined timeframe. Goals should be measurable, attainable, relevant, and time-bound (SMART), while objectives outline the specific actions and milestones necessary to accomplish those goals.

Strategies and Action Plans: Strategies outline the broad approaches and initiatives that will be employed to achieve the organization's goals. Action plans break down these strategies into specific tasks, responsibilities, and timelines, ensuring effective implementation.

Performance Measurement and Evaluation: Establishing key performance indicators (KPIs) and metrics allows for ongoing monitoring and evaluation of progress toward strategic goals. Regular assessment helps identify areas for improvement and enables adjustments to the plan as needed.

Now, let's consider a chosen company for this discussion:

Company: XYZ Corporation

Components Used:

XYZ Corporation has a well-defined vision and mission statement that emphasizes innovation, customer satisfaction, and sustainable growth. These statements provide clarity and guide the company's strategic decision-making.

The company conducts regular SWOT analyses to identify internal strengths and weaknesses as well as external opportunities and threats. This analysis helps XYZ Corporation understand its competitive position and adapt its strategies accordingly.

Goals and objectives are clearly defined, measurable, and aligned with the company's long-term vision. They cover various aspects such as market expansion, product development, and operational efficiency.

XYZ Corporation has a comprehensive set of strategies and action plans that outline how the company will achieve its goals. These include initiatives for research and development, marketing, talent acquisition, and technological advancements.

The company emphasizes performance measurement and evaluation by tracking KPIs, conducting regular reviews, and seeking feedback from stakeholders. This allows XYZ Corporation to monitor progress, identify areas of success, and address any challenges.

Communication of the Plan to the Workforce:

XYZ Corporation has implemented effective communication channels to ensure their strategic plan is well-communicated to the workforce. They utilize regular town hall meetings, internal newsletters, and online platforms to share updates, progress, and strategic objectives.

The company encourages employee involvement and solicits feedback through surveys, focus groups, and open-door policies. This approach fosters a sense of ownership and engagement among the workforce, ensuring alignment with the strategic direction.

XYZ Corporation also invests in training and development programs to equip employees with the skills and knowledge necessary to execute the strategic plan effectively.

Overall, XYZ Corporation demonstrates a good job of communicating its strategic plan to the workforce. By employing various communication channels, encouraging employee involvement, and providing necessary training, they ensure that employees understand the organization's goals, their role in achieving them, and the importance of their contributions.

It's important to note that the specific components and communication strategies may vary across organizations, but the key is to have a well-defined strategic plan that is effectively communicated throughout the workforce to drive alignment and successful execution.

I hope this helps. Cheers! ^^

What is biostatistics?

Answers

Biostatistics is the application of statistical techniques to scientific research in health-related fields, including medicine, biology, and public health, and the development of new tools to study these areas. Since the beginning of the twentieth century, the field of biostatistics has become an indispensable tool in improving health and reducing illness.

Biostatistics is the application of statistical methods and techniques to biological and health-related data and research. Some key aspects of biostatistics:

It involves collecting, organizing, analyzing and interpreting data related to living things, including humans, animals and plants.

Biostatistical methods are used in areas like public health, medicine, epidemiology, genetics, ecology and other biological fields.

Common tasks include analyzing clinical trial data, determining correlations between health factors, and assessing trends in disease rates over time.

Biostatisticians use statistical techniques like:

Summarizing data through measures of central tendency (mean, median, mode) and dispersion (standard deviation, variance, range)Testing hypotheses through statistical tests like t-tests, ANOVA and chi-squared testsModeling relationships through techniques like regression analysisComparing groups through survival analysis for longitudinal dataEvaluating the efficacy and safety of medical treatments through clinical trials

Programming skills in languages like R and Python are increasingly important for biostatisticians to analyze large datasets.

The role of a biostatistician is to ensure proper statistical methods are used to analyze biological data, accurately interpret results and communicate findings clearly.

In summary, biostatistics applies mathematical and statistical analysis to various types of biological and health-related data. It helps researchers draw meaningful conclusions from complex datasets and reduce uncertainty in their studies.

I sign a contract that guarantees me an immediate payment of $2 000, but then I have to invest $800 a year for ten years. At the end of the tenth year, I get a further payment of $8 000. If I can invest money at 10% interest, what is my approximate external rate of return on the contract?

Answers

The approximate external rate of return on the contract is approximately 12.58%.

To calculate the approximate external rate of return on the contract, we need to consider the cash flows involved and discount them back to the present value.

The external rate of return is the interest rate that equates the present value of the cash inflows and outflows.

Let's break down the cash flows associated with the contract:

Immediate payment: You receive $2,000 immediately, which we don't need to discount since it's already in present value terms.

Annual investment: You have to invest $800 every year for ten years. These cash outflows can be considered as an annuity.

Using the formula for the present value of an ordinary annuity, we can calculate the present value of this cash flow:

PV of annuity = PMT × [1 - (1 + r)^(-n)] / r

Where:

PMT = Annual investment = $800

r = Interest rate = 10% or 0.10

n = Number of periods = 10

Using these values, we can calculate the present value of the annuity:

PV of annuity = $800 × [1 - (1 + 0.10)^(-10)] / 0.10 ≈ $5,759.13

Final payment: At the end of the tenth year, you receive an additional payment of $8,000. We need to discount this amount back to the present value using the interest rate:

PV of final payment = $8,000 / (1 + 0.10)^10 ≈ $2,208.99

Now, we can calculate the total present value of the cash flows:

Total present value = Immediate payment + PV of annuity + PV of final payment

Total present value = $2,000 + $5,759.13 + $2,208.99 ≈ $10,968.12

To find the approximate external rate of return, we need to solve for the interest rate in the equation:

Total present value = $10,968.12 = $0 / (1 + r)^0 + $800 / (1 + r)^1 + ... + $800 / (1 + r)^10 + $8,000 / (1 + r)^10

This equation cannot be solved algebraically, so we can use numerical methods or financial calculators to find the approximate rate of return.

By using such methods, the approximate external rate of return on the contract is approximately 12.58%.

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Select the correct answer.
Where can you check if the name that you choose for your company is already trademarked?

Answers

You may do this by searching throughout the USPTO’s Trademark Electronic Search System database to see for yourself if your determined trademark has already ever been applied for.
This may or may not have answered your question as it says to select the correct answer, so please respond if needed.

Why does a simple cup of coffee stats at 180 rupees in the coffee club?

Answers

The price of a cup of coffee at the Coffee Club starting at 180 rupees can be influenced by several factors.

Quality of Ingredients: The Coffee Club may prioritize using high-quality coffee beans sourced from specific regions or with unique flavors. Premium beans can be more expensive, contributing to the higher price of the coffee.

Specialty Brews and Techniques: The Coffee Club may offer specialty brews or unique brewing methods that require additional equipment, expertise, or time. These specialized brewing techniques can result in a higher cost per cup.

Ambience and Experience: The Coffee Club may provide a comfortable and inviting atmosphere for customers, offering amenities such as cozy seating, free Wi-Fi, or live music. The overall experience and ambiance can be factored into the pricing to cover the costs of maintaining such an environment.

Overhead Costs: The Coffee Club needs to cover various operational expenses, including rent, utilities, salaries, equipment maintenance, and marketing. These costs are likely incorporated into the price of the coffee to ensure the sustainability of the business.

Brand Value and Perception: The Coffee Club may have established itself as a premium brand in the market, which can influence the perception of value associated with their products. Customers may be willing to pay a higher price based on the reputation, quality, and exclusivity of the brand.

It's important to note that pricing strategies can vary among different coffee establishments, and factors like location, target market, competition, and local economic conditions can also influence the pricing decisions.

I hope this helps. Cheers! ^^

Definition of PPPFA and BBBEE?

Answers

The only way I could see the picture is by looking in a

a company's financial records at the end of the year included the following amounts.

cash - $70,400

accounts receivable - $28,400

supplies - $4,400

accounts payable $10,400

notes payable $5,200

retained earnings, beginning of year $17,400

common stock $44,000

service revenue $50,400

wages expense $ 8,400

advertising expense $5,400

rent expense $10,400

what is the amount of net income on the income statement for the year?

Answers

If a company's financial records at the end of the year. The amount of net income on the income statement for the year is $26,200.

What is the net income?

Total expenses:

Total Expenses = Wages Expense + Advertising Expense + Rent Expense

Total Expenses = $8,400 + $5,400 + $10,400

Total Expenses = $24,200

Net income:

Net Income = Total Revenue - Total Expenses

Net Income = $50,400 - $24,200

Net Income = $26,200

Therefore the amount of net income on the income statement for the year is $26,200.

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Other Questions
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