TEST OF PRACTICAL KNOWLEDGE QUESTION The countries... | WAEC SSCE - Geography - 2020 (Practical and Physical Geography)

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TEST OF PRACTICAL KNOWLEDGE QUESTION

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

(a) Vertical divergent bar graph

Mean contribution:

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

Country	Contribution ($)	Deviation from mean ($)
A	35,000	−15,000
B	60,000	+10,000
C	45,000	−5,000
D	80,000	+30,000
E	30,000	−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.

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.

Read lesson note on Statistical Maps And Diagrams (WAEC)

Answer Details

(a) Vertical divergent bar graph

Mean contribution:

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

Country	Contribution ($)	Deviation from mean ($)
A	35,000	−15,000
B	60,000	+10,000
C	45,000	−5,000
D	80,000	+30,000
E	30,000	−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.

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.

Read lesson note on Statistical Maps And Diagrams (WAEC)

Statistical Maps And Diagrams

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TEST OF PRACTICAL KNOWLEDGE QUESTION The countries listed in Table X below contributed money as indicated for a joint project in the year 2017. Use the data...

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TEST OF PRACTICAL KNOWLEDGE QUESTION The countries listed in Table X below contributed money as indicated for a joint project in the year 2017. Use the data...

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