Sam surveys the entire student body at his middle school to compare how many min

Question

Sam surveys the entire student body at his middle school to compare how many minutes each day students spend listening to music on the radio and how many minutes each day they spend listening t0 MP3 files they have downloaded. He then uses a random number table to select 10 students from each group and displays the results on the dot plots shown. Which describes the distribution for each graph? Minutes Spent Listoning to Radio Minutes Spent Listening to MP3s 0 20 40 60 80 100 120 140 160 180 0 20 40 60 80 100 120 140 160 180 a. The graph for listening to the radio seems to be symmetric, while the graph for listening to MP3 files seems to be skewed to the right. The graph for listening to the radio seems to be skewed to the right, while the graph for listening to MP3 files seems to be symmetric. b. c. Both graphs seem to be symmetric. d. Both graphs seems to be skewed to the right

Explanation / Answer

option b is the answer

As we can see from the first graph when t=0 no. of people=6

t=20 no. of people =3

t=60 no. of people =1

here we can see that count of peole is reducing and graphing is becoming sliding down wards

As we can see from the first graph when t=0 no. of people=2

t=60 no. of people =3

t=120 no. of people =3

t=180 no. of people=2

here graph is symmetric w.rt mid point of graph

to elaborate, when t=90 on both side sof t=90 graph looks same

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