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(4) Refer to the grouped data below:
F
2.
Score
70-74
65-69
50-64
55 59
Class boundaries
695 - 74.5
64.5 - 69.5
59.5 - 64.5
54.5 59.5
4. Find the range of the grouped data below:
A 20
B 30
C. 55
D. 59.5
5 If the range of a set of scores is 24 and the lowest score is 7, what is the highest score?
B. 24
C. 29
D.31
& Which is not a reason why the measure of variability or the spread of data values is
important?
A A measure of spread gives us an idea of how well the mean, for example, represents
the data
B. it is often seen as positive if there is little variation in each data group
C It regards its relationship with measures of central tendency
0 None of these
