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Mathematics 18 Online
OpenStudy (anonymous):

The table shows the number of hours that a group of friends spent in their first week training to run a marathon. In the second week, they each add five hours to their training times. What are the mean, median, mode, and range of times for the second week? runner hours Jeff 9 Mark 5 Karen 5 Costas 5 Brett 7 Nikki 6 Jack 7

OpenStudy (anonymous):

A)mean = 10 median = 11 mode = 11.3 range = 4 B)mean = 11 median = 11.3 mode = 10 range = 0.3 C)mean = 11.3 median = 11 mode = 10 range = 4 D)mean = 11.3 median = 11 mode = 10 range = 0.3

OpenStudy (e.mccormick):

Did you find anu of the values asked for?

OpenStudy (anonymous):

No

OpenStudy (e.mccormick):

OK, what part of mean, median, mode, and range are you having trouble with then?

OpenStudy (anonymous):

14,10,10,10,12,11,12

OpenStudy (anonymous):

Median: 10,10,10,11,12,12,14

OpenStudy (anonymous):

ops Median: 11

OpenStudy (anonymous):

It's B?

OpenStudy (e.mccormick):

Yes.

OpenStudy (e.mccormick):

Which eliminates B. The 11 there is for the mean.

OpenStudy (e.mccormick):

Wheee. Lag... it would not be OpenStudy without bad lag.

OpenStudy (e.mccormick):

Median = 11 means it is A, C, or D. Lag messed up the order of my replying to you.

OpenStudy (anonymous):

thanks anyway

OpenStudy (e.mccormick):

Well, do you want to see this one through?

OpenStudy (anonymous):

sure

OpenStudy (e.mccormick):

14+12+12+11+10+10+10=79 \(79/7\approx 11.3\) What would that one be?

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