The countries listed in Table X below contributed money as indicated for a joint project in the year 2017. Use the data in the table to answer the questions...

Assessment: WAEC SSCE - Geography - 2020 (Practical and Physical Geography) Subject: Geography

Question 1 Report

The countries listed in Table X below contributed money as indicated for a joint project in the year 2017. Use the data in the table to answer the questions that follow.

Country Amount Contributed
A
B
C
D
E

Represent the data in Table X on a vertical divergent bar graph. (b) State one use of divergent bar graph.

Answer Details

(a) Vertical divergent bar graph

Mean contribution:

\[\bar{x}=\frac{35,000+60,000+45,000+80,000+30,000}{5}=\frac{250,000}{5}=\$50,000\]

CountryContribution ($)Deviation from mean ($)
A35,000−15,000
B60,000+10,000
C45,000−5,000
D80,000+30,000
E30,000−20,000

The horizontal zero line represents the mean contribution of \(\$50,000\). Bars above it show contributions above the mean, while bars below it show contributions below the mean.

graph
Vertical divergent bars plotted from the zero line, where zero represents the mean contribution of $50,000. Countries A, B, C, D and E have deviations of −$15,000, +$10,000, −$5,000, +$30,000 and −$20,000 respectively.

Scale: vertical scale: 1 cm represents \(\$5,000\) deviation; horizontal scale: equal widths and equal spacing for the countries.

(b) A divergent bar graph is used to show and compare the deviations of values above and below a common mean.

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