Question: Activity 4: FIND THE VARIANCE Directions: Read, understand and analyze the problems very carefully. Then, solve and show your complete solutions: 1. The heights

Activity 4: FIND THE VARIANCE Directions: Read, understand and analyze the problems

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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