Question

please help..
Teams from two colleges competed in a 10 km cross-country race. The data below show the finish times in minutes for the two teams.

Team A: 28, 30, 30, 30, 30, 28, 35, 34, 25, 35
Team B: 30, 32, 30, 29, 26, 30, 27, 32, 28, 32

Find the mean and the range of the data for Team A and for Team B. Use your results to compare the two teams.

Answer 1

The "mean" of a set of data is the average. Average is found by adding the values of one set of data, and dividing that by the number of data points you have. Do that for both team A and team B.

The range is the difference between the minimum and maximum data points. Subtract the lowest value from the highest value in both sets of data.

Answer 2

@GitFace for the mean i got 30.5. is that correct?

Answer 3

for A

Answer 4

@elpato10 That is correct.

Answer 5

B for mean is 29.6?

Answer 6

how do i find range @GitFace? i dont understand what you say on top

Answer 7

The range is the distance between the largest point of data and the smallest point of data.
If you had the data set;

12 ,23, 18, 16, 5

Your range is the difference between 23 and 5 e.g. 23-5 = 18.

Answer 8

@GitFace, so range for A would be 10?
for b range is 6?

Answer 9

You are correct.

Answer 10

i do not need to compare, right?

Answer 11

You were asked to compare, so compare. What do the values of average and range mean in reference to the quality of the teams?

Answer 12

like what do I compare... sorry i not understanding

Answer 13

The averages and rnages of the two teams. How does the average race time of team A relate to Team B? How does the range of Team A compare to Team B?

Answer 14

So i would say team B beat team A in the race?

Answer 15

Not neccesarily. You can say that Team B is, on average, faster than Team A. You can also say that, because of the smaller range, Team B has less variability in their times than Team A.

Answer 16

Thanks a bunch

Answer 17

You're welcome.