42. In a small town, a survey was conducted in respect of profits made byelall shops. The following results were obtained :No. of shopsNo. of shopsProfit or loss In(Rs. '000)4 to-3-3 to -2-2 to-1-1 to 00 to 1Calculate() The average profit made by a retail shop.() Total profit by all shops.(iil) The coefficient of variation of earnings.Profit or loss in(Rs. '000)1 to 22 to 33 to 44 to 55 to 6561 40102228382418100.0

We want to find mean, total profit and coefficient of variation.

Answered: 42. In a small town, a survey was…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Table 1 reports the estimates of the effects of personal characteristics on a monthly wage. The variable birth order measures order of birth, i.e. 1st child, 2nd child etc. The total variation in monthly wage is 138787905. Use this table to answer the following questions: a) In column 6, are the effects of being black, living in the south, and living in metropolitan jointly important variables in determining monthly wage? (Hint: You can use R² to test this hypothesis). b) In column 5, are the effects of being black and living in the south jointly important variables in determining monthly wage? (Hint You can use R² to test this hypothesis). c) Do explanatory (independent) variables in column 6 jointly explain monthly wages? (Hint: You can compute RSS from the unrestricted model using R2 and TSS from part e.)
The figure to the right shows the total sales, in thousands of dollars, from the distribution of x thousand catalogs. Find and interpret the average rate of changes of sales with respect to the number of catalogs distributed for the given changes in x. (a) 10 to 20 (b) 20 to 30 (c) 30 to 40 (d) What is happening to the average rate of change of sales as the number of catalogs distributed increases? (a) The average rate of change over 10 to 20 is (Type an integer or a simplified fraction.) 70+ 60- 50- Sales (in thousands) 8 8 8 8 8 40- 30- 20- 9 10- 0- 0 32 41 47 -51 10 20 30 40 50 60 Number (in thousands)
5.1 (1) The graph shows the population of bacteria in a culture. a) Determines the average rate of variation of the crop between the 3rd and 4th hour. B) What does this rate of change mean?
A company is studying the relationship between the mean annual percent return on capital (profitability) (y) and the mean annual percentage sales growth (x) for eight acrospace and defense companies. The data are summarised as follows: n=8, Σχ=1106, Σv=1399, Στ΄ = 2662.14, Στ’ = 2784.65, Σαν =1897.68 (a) (b) (d) Compute the product-moment correlation coefficient for the data. Interpret your result. Obtain the least square regression line equation. Calculate the coefficient of determination for the above data and comment on your answer. Find the value of profitability's percentage when the sales growth is 10 percent.
6. In the table beloe provides predicted population data about the world and India.RegionPredicted Population (millions)Region: 2035 2050World : 8,933 9766India : 1,655.7 1670.1 (d) Calculate the absolute change in the percent of the world population that liives in India between 2035 and 2050. Round your results to one decimal place. (e) The predicted population of India is incresing while the percentage of the world population predicted to live is decresing. How can that happen? Explain in full sentences.
Given the values in the table in the image attached, how do I find the value of r^2? Does the value suggest that the model is a good, somewhat good, or bad fit? About what percent of the total variation in y can be explained by the model? What percent is unexplained?
(b) The following chart shows the relationship between concert seating capacity (00) and revenue in RM '000 for a sample of concerts. i) ii) iii) Am oun t (RM '000 ) Exercises ke What is the above diagram called? How many concerts were studied? Describe on the relationship between revenue and seating capacity.
The marginal reenue of a certain commodity by R'(q)=3√q If the total reveune from 9 unit is $60 what is the expression of the revenue function R(q)=?
A standard "money demand" function used by macroeconomists has the form In(m) = Bo + B, In(GDP) + B2R, Where m is the quantity of (real) money, GDP is the value of (real) gross domestic product, and R is the value of the nominal interest rate measured in percent per year. Supposed that B, = 2.15 and B, = -0.06. %3D What is the expected change in m if GDP increases by 3%? The value of m is expected to V by approximately%. (Round your response to the nearest integer) What is the expected change in m if the interest rate increases from 1% to 9%? The value of m is expected to ▼ by approximately %. (Round your response to the nearest integer)
How do the results compare to the percentage using chebychev's theorem?
The total profit of a company since it started a business is given by P(t) = .01t^3 + 10t − 15 where t is the number of months since the company started a business. (a) Find the total profit 11 months after the company started a business (b) Find the marginal profit of the 11th month.
14. What is the significance of the coefficient of variation?

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