Activity 4: FIND THE VARIANCE Directions: Read, understand and analyze the problems very carefully. Then, solve...
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Activity 4: FIND THE VARIANCE Directions: Read, understand and analyze the problems very carefully. Then, solve and show your complete solutions: 1. The heights in cm of students in a class are 163, 167, 158, 174, 148. Find the variance. 2. Ten students took their practical exam in Science. Out of 50 items they obtained the following scores 44 49 42, 25 , 29, 21, 39, 40, 47 , 45. What is the variance of their scores ? 3. If the standard deviation of a sample is given to be 62.5 then find its variance. Activity 4: FIND THE VARIANCE Directions: Read, understand and analyze the problems very carefully. Then, solve and show your complete solutions: 1. The heights in cm of students in a class are 163, 167, 158, 174, 148. Find the variance. 2. Ten students took their practical exam in Science. Out of 50 items they obtained the following scores 44 49 42, 25 , 29, 21, 39, 40, 47 , 45. What is the variance of their scores ? 3. If the standard deviation of a sample is given to be 62.5 then find its variance.
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Related Book For
Introduction to Probability and Statistics
ISBN: 978-1133103752
14th edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
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