Points against Points for
me basic hall leunen en 5 matches during one season. They keep
51 72 40 66 69
by the mass of plants Aer score in each gaine and the number
and then the results are shown below.
43 58 81 78 60
60 42 57 69 74
40 41 72 66 54
a) Draw a bad to-back stem-and-lear diagram showing the numbers of
b) Bylooking at the shape of the diagram, is the team likely to have
more games than they lost, or the other way round?
13 15 punde take part in a fitness assessment. Their pulse rates are taken
bende and alter exercise. The results are recorded in this back-to-back
68 means 68 beats per minutes
53 67
Key
4151 means 54 beats per minute
62 62 7 7 70
72 66 51
as 00564
points for and against the team during the season.
stem-and-leat diagram
8
9 6 5
1 3
330) 6
8 8 9
887/6
17
0 2 3 4
997.
7.
8
1 3.
8
8
9
3
a) Which side of the diagram is likely to show the readings taken after
exercise? Justify your answer.
b) Calculate the mean, median, mode and range for the pulse rates before
and after exercise.