Chapter 2, Section 2, Exercise 068 Making Friends Online A survey conducted in M

Question

Chapter 2, Section 2, Exercise 068 Making Friends Online A survey conducted in March 2015 asked 1060 teens to estimate, on average, the number of friends they had made online. while 43% had not made any friends online, a small number of the teens had made many friends online. (a) Do you expect the distribution of number of friends made online to be symmetric, skewed to the right, or skewed to the left? O Skewed to the left. O Symmetric O Skewed to the right. (b) Two measures of center for this distribution are 1 friend and 5.3 friends. Which is most likely to be the mean and which is most likely to be the median? Mean- Median=L Lenhart A, "Teens, Technology, and Friendships", Pew Research Center, pewresearch.org, August 6, 2015. Value for the mean is estimated from information given. Question Attempts: 0 of 1 used SAVE FOR LATER SUBMIT ANSWER

Explanation / Answer

a)

as proportion of people with 0 friends is 43% whcih is on left side and maximum ; and % decrease with increasing number of friends

skewed to the right

b)

as it is skewed to the right ; therefore mean is greater than median

mean=5.3

median=1

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