Question

both. 6 and 7

Interpret these numbers not direcly intuitive understanding. Mention any particular features of this data set that you see 6. A random sample of 100 students was taken, and the number of times a weck the student exercised was recorded: 10 of Times Exercised Freq 2 14 3 0 40 24 20 ie. 20 students did not exercise. 40 exercised 1 time a week, 21 exercised twice, etc. (a) Find the average number of times a student exercised. (b) Find the median of the number of times a student exercised. (c) Find the variance of the number of times a student exercised. (d) Find the standard deviation of the number of times a student exercised. 7. Continue with the data in Problem 1. (a) Calculate the first quartile for time number of times a student exercised. (b) Calculate the third quartile for time number of times a student exercised. (c) Calculate the lower cutoff for outliers. (d) Calculate the upper cutoff for outlicrs. (e) Identify all outliers in the dataset.

Answer 1

:- Question 020 o Total 100 N= Ef= 100 EfX= 150 {fx² = 462 . f x = 120 = 1.50 - Answer (c) variance = * =*x-(8)? = (16) (462) – (115)2 = 4162 - 2125 Variance = 2.37 answer =

(d) Standard deviations = variance = J 2137 = 1154 Answer (b) If I cumulative Frequency (less than type) 20 1 40 60 24 84 2 98 Median class N=100 sunce , N=100 cumulative frequency just greater than N gives the Median class and the value of x in Median class is Median Here ♡ = 100 - 50 Hence, Median = 1. - Answer