NZ Level 5
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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
Approx 3 minutes
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Answer the following given this set of scores:

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

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

Answer the following using this set of scores:

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

Outcomes

S5-1

Plan and conduct surveys and experiments using the statistical enquiry cycle:– determining appropriate variables and measures;– considering sources of variation;– gathering and cleaning data;– using multiple displays, and re-categorising data to find patterns, variations, relationships, and trends in multivariate data sets;– comparing sample distributions visually, using measures of centre, spread, and proportion;– presenting a report of findings

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