Page 263 - SK Year 5 Mathematics DLP

2 This is the time recorded for Year 5
male participants from the Kenari
House in a cross-country run.

Time Recorded in a
Cross-Country Run Time Recorded in a
Name Time Cross-Country Run
Zariq 26 minutes The pictograph
Peter Tan 23 minutes 23 minutes represents the
Hakimi 25 minutes 25 minutes data of the time
Fazil 25 minutes recorded on the
Harvinder 26 minutes 26 minutes left. We are going
to determine
Cheng 28 minutes the median and
Amer 26 minutes 28 minutes mean for this
Ikhwan 29 minutes data.
Jason 26 minutes 29 minutes
represents 1 person

a Arrange the data in ascending order.
23, 25, 25, 26, 26, 26, 26, 28, 29

The fifth data is located in the middle of the data.
So, the median is 26 minutes.

23 + 25 + 25 + 26 + 26 + 26 + 26 + 28 + 29 Total time
b Mean =
1 + 2 + 4 + 1 + 1 Total number of participants

(1 × 23) + (2 × 25) + (4 × 26) + (1 × 28) + (1 × 29)
=
9
(23 + 50 + 104 + 28 + 29)
= Median is the value of the data
9 in the middle of a set of data
234 that has been arranged in
= ascending or descending order.
9
= 26 Mean is the result obtained by
dividing the total value of a set of
The mean is 26 minutes. data by the number of the data.
Mean is also known as average.

What is the mode and
range of the data above?

• Explain the meaning of median and mean. 255
8.2.1 • Guide pupils to determine the mode, range, median, and mean
from a different set of data.