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Question: the table given below provides the number of households in...

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The table given below provides the number of households in a country during the period 1970 to 1990. The pie-chart gives the distribution of households based on the number of children for the years 1970 and 1990. Data interpretation: Solved Examples

Year No. of households (millions)
1970 120
1972 123
1974 126
1976 129
1978 132
1980 135
1982 140
1984 145
1986 150
1988 155
1990 160

 

Ex.1 How many households were without any children in 1990 if it is given that the average number of children per household in 1990 was 3?
1. 24 million
2. 64 million
3. 14 million
4. Cannot be determined
 
 
Ex.2 According to the above pie graphs, In 1970 the average number of children per household in 1970 was
1. 1.18
2. 1.35
3. 2.0
4. Cannot be determined
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