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Hong Kong
Stage 4 - Stage 5

Mean, median mode and range (calculation from graphs and charts)

Interactive practice questions

Given the stem-and-leaf plot:

Stem Leaf
$1$1  
$2$2 $4$4  $9$9
$3$3 $4$4  $4$4 $4$4 $9$9
$4$4 $1$1 $9$9 
$5$5 $1$1 $8$8 $8$8
$6$6 $2$2 $2$2 $9$9
$7$7 $0$0 $9$9
$8$8 $0$0 $9$9 $9$9
$9$9 $4$4
 
Key: $1$1$\mid$$2$2$=$=$12$12 
a

Find the mean from the stem-and-leaf plot. Round your answer to two decimal places.

b

Find the mode for the data provided in the stem-and-leaf plot.

c

Find the median.

d

What is the range of the scores?

Easy
Approx 5 minutes

Find the mode from the histogram shown.

Calculate the range from the bar chart.

The stem and leaf plot below shows the age of people who enter through the gates of a concert in the first $5$5 seconds.

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