Veraween tne49. From the following table calculate the coefficient of correlation by KarlPearson's method :6.2104.8.180.0 11 dArithmetic means of X and Y series are 6 and 8 respectively.nobslen k.Y:9.8.7reiy 72oitaltele ni axhsM

First we have to determine the missing value in Y series with the help of given mean.

Answered: 49. From the following table calculate…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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9. Vhat is the mean of this data? 3x10, 4x105, 5x10, GX105, 7 x105. A. 3,5 xio5 C 6.5 X105 B. 4x105 D. 7 X105 10. f x is the average of 2 & 3, y is the avrage of x *z, z is the avergge of x 95, find +the average of x,y 8 Z. A. 9. 375 a. 4. 6875 B. 3. 125 0. 3.75
d E 80 F3 Page < 2 of 2 2. Although the Occupational Safety and Health Act (OSHA) is not very popular with management because it is expensive to implement, some sources claim that it has been effective in reducing industrial accidents. The following data were collected on lost-time accidents both before and after OSHA came into effect (the figures given are mean man-hours lost per month over a one year period) at six different industrial plants: Plant 1 2 3 4 5 6 38 64 42 70 58 30 Before OSHA After OSHA 31 58 43 65 52 29 Difference (B-A) a. A test is to be performed to see if OSHA has been effective in reducing the industrial accidents. Differences are calculated as "Before - After". Enter those differences in the table. b. What was the average reduction in man-hours lost per month in the sample? c. The population of differences has a normal distribution. The sample standard deviation equals 3.225 hours. Test the claim that OSHA has been effective in reducing the average number of…
15. In January 2013, the dear population in a certain area was counted at 3,000. Since then, the population has decreased by about 12% each year. In which year will the population be expected to drop below 500? A. 2025 ACEA B. 2026 C. 2027 D. 2028 O O O A B E: All of the Above F: None of the Above
The multiple correlation (R) is: The correlation between predicted and observed scores. The sum of the simple r's. The highest simple r. Always between 0 and 1 (inclusive).
4.38
3.7.1 only
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Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?
A group of research students wants to determine whether there is a correlation between the number of theft cases x and the number of vandalism cases y incurred in their school. Data for 4 months show the following in the picture. 1. What is the value of n? 2. What is the value of of the summation of product of X and Y? 3. what is the value of r?
Would you say the correlation is positive or negative? positive O negative (c) Use a calculator to verify that Σ * Ex=61, Ex Computer. (Round your answer to four decimal places.) 0.9802 Need Help? cloudy = 1007, x2 = 1007, Σy = 634, Σ Master It As x increases from 3 to 23 months, does the value of rimply that y should tend to increase or decrease? Explain y O Given our value of r, y should tend to decrease as x increases. Given our value of r, y should tend to increase as x increases. Given our value of r, we can not draw any conclusions for the behavior of y as x increases. O Given our value of r, y should tend to remain constant as x increases. Q Search = 14 mmm 90,298, and Exy = 9,315. hp 9 |99+ X
n 19 As a general rule it can be stated that: A. Association and causation are two terms that mean the same thing as regression-correlation analysis. B. Correlation shows association but does not prove causation. C. Regression analysis shows causation and correlation analysis proves causation. D. All of the above are correct.
y: 30 -10 50 10 1 25 -15-60 15 8 35 20-5 7. 10 9. -40 -5 X: 9. 3 4 6. 0.05. Test for significant positive (linear) correlation at a =

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49. From the following table calculate the coefficient of correlation by Karl (C.c) Pearson's method : 4 8. X : 180.0-11 d.C Arithmetic means of X and Y series are 6 and 8 respectively. stem k. Y : 9. 8. 7 reiv 7