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CanadaON
Grade 12

Quantiles and Percentiles

Interactive practice questions

Here are Paul's scores from his last $13$13 rounds of golf played:

$64,66,68,70,72,74,78,84,102,106,112,124,128$64,66,68,70,72,74,78,84,102,106,112,124,128

a

What is his median score?

b

What is the lower quartile score?

c

What is the upper quartile score?

Easy
1min

Here are Adam's scores from his last $17$17 exams:

$38,44,48,51,56,58,62,70,74,78,80,82,85,88,92,94,100$38,44,48,51,56,58,62,70,74,78,80,82,85,88,92,94,100

Easy
2min

Mensa is an organisation that only accepts members who score in the $98$98th percentile or above in an IQ test. What does this mean? Select all that apply.

Easy
< 1min

Consider the graph of a standard normal distribution showing the $68-95-99.7$689599.7 rule.

Easy
1min
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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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