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Grade 12

Quartiles and inter-quartile range

Interactive practice questions

Answer the following, given this set of scores:

$33,38,50,12,33,48,41$33,38,50,12,33,48,41

a

Sort the scores in ascending order.

b

Find the number of scores.

c

Find the median.

d

Find the first quartile of the set of scores.

e

Find the third quartile of the set of scores.

f

Find the interquartile range.

Easy
2min

Answer the following given this set of scores:

$13,15,5,16,7,20,12$13,15,5,16,7,20,12

Easy
2min

Answer the following, given the set of scores arranged in the corresponding stem and leaf plot:

Easy
3min

Answer the following using this set of scores:

$-3,-3,1,9,9,6,-9$3,3,1,9,9,6,9

Easy
2min
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Outcomes

12D.D.1.2

Determine the positions of individual data points within a one-variable data set using quartiles, percentiles, and z-scores, use the normal distribution to model suitable one-variable data sets, and recognize these processes as strategies for one-variable data analysis

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