Page 264 - SK Year 5 Mathematics DLP

3 The bar chart shows Daily Pocket Money Identify
daily pocket money the existing
for 10 pupils. 4 information.
Determine the: Number of pupils 3

a mode. 2
1
b range. 0

c median. RM4 RM5 RM6 RM7
Value of money
d mean.

minimum highest maximum
value frequency value

a RM5 has the highest frequency, which is 4. The mode is RM5.

b Range = maximum value – minimum value
= RM7 – RM4
= RM3
The range is RM3.

c Arrange the data in descending order.
RM7, RM7, RM7, RM6, RM5, RM5, RM5, RM5, RM4, RM4 Calculate the
average of both
two data in the middle data in the middle
RM5 + RM5 to obtain the
Median = median.
2
RM10
= the total value of money
2 d Mean =
= RM5 the number of pupils
= (2 × 4) + (4 × 5) + (1 × 6) + (3 × 7)
The median is RM5.
2 + 4 + 1 + 3
= 8 + 20 + 6 + 21
If 2 other 10
pupils bring 55
RM7, does the = 10
mode change?
Discuss. = 5.5
The mean is RM5.50.

256 • Guide pupils to obtain important information from the bar chart
8.2.1
before finding the range, mode, median, and mean.