Data Interpretation Practice Test 5

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Directions (12 and 13): The following bar diagram shows the number of families of a certain locality with various number of letters received by those families in a certain month, as shown in a survey by the local post office. Read the graph and answer the questions below.

Question : 13 of 80

Marks: +1, -0

The average number of letters received per family in that month is:

$31 3/ 7$
3
2
$2 10/17$

Validate

Solution:

\table \Number\of \Families,\Number \of\Letters,\Total\Letters;75, 0 ,0;35 ,1, 35;110 ,2 ,220; 60 ,3,180;30 ,4 ,120;15, 5, 75;5 ,6, 30;\Total= 330 ,21, 660

Average number of letters

= 660/330 = 2

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