Applied Mathematics for Electrical Engineering (3130908)

BE | Semester3  Topic : skewness

Q5 (c ( i )) Winter-2019   Attempt the following. In a distribution of two different groups the variances are 15 and 27. Whereas the third central moments are 32.4 and 67.56 respectively. Compare the skewness of two groups.

3 Marks
 Unit : Basic Statistics

Q5 (c ( ii )) Winter-2019  
State the formula for coefficient of skewness based on central moments and find it for the following frequency distribution.
Class 50 - 55 55 - 60 60 - 65 65 - 70 70 - 75
y 8 10 15 17 8

4 Marks
 Unit : Basic Statistics