1 12. The annual salaries of a group of employees are given in the tollowingtable:Salaries (in Rs. '000)45 50 55606570 7580Number of persons35 874.Calculate the standard deviation of the salaries.

Measures of dispersion is used to find the scatter ness. There are different measures of dispersion.…

Answered: 1 12. The annual salaries of a group of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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The number of hours worked (per week) by 400 statistics students are shown below in Table 1. Number of Hours Frequency 0 - 9 20 10 - 19 80 20 - 29 200 30 - 39 100 Refer to Table 1. ' 1. The class width for this distribution Group of answer choices is 39, which is: the largest value minus the smallest value or 39 - 0 = 39. is 10. is 9. varies from class to class. 2.The number of students working 19 hours or less Group of answer choices is 180. is 300. is 100. is 80. 3.The relative frequency of students working 9 hours or less Group of answer choices is 0.95. is 100. is 20. is 0.05.
The table below shows some data fromn a known international clothing company. Each row in the table shows sales for a year (in million) and the amount spent on advertising that year (in million). In this case, sales is what we want to predict using the advertising budget. Find the following. Given that: Mean of Advertising =15 and standard deviation = 5 Mean of Sales= 45 and standard deviation = 10 Advertising (Million) Sales (Million) 19 54 10 28 12 43 17 47 8 32 15 50 22 65 1. Find the correlation coefficient (r). Determine the direction and strength of the relationship? 2. Find the Coefficient of determination. Explain the result (is it a useful model)? 3. Compute and draw Regression line model. 4. Compute the mean absolute error for this regression model.
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The monthly salaries (in thousands of dollars) of a sample of 6 sales representatives are as follows. 圖 6, 9, 13, 12, 10, 10 Send data to calculator Find the standard deviation of this sample of monthly salaries. Round your answer to two decimal places. (If necessary, consult a list of formulas.)
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1 12. The annual salaries of a group of employees are given in the followin table: Salaries (in Rs. '000) : Number of persons 45 50 55 8 60 65 70 75 7 9 80 7 4. 3 Calculate the standard deviation of the salaries.