Question
A boy scored the following marks in various class tests during a term, each test being marked out of $20.15, 17, 16, 7, 10, 12, 14, 16, 19, 12, 16.$What is his mean marks?
✓
Answer
Total marks scored by the boy in $11$ tests
$=15+17+16+7+10+12+14+16+19+12+16 $
$=154 $
$\therefore$ Mean marks
$=\frac{154}{11} $
$=14 .$
$=15+17+16+7+10+12+14+16+19+12+16 $
$=154 $
$\therefore$ Mean marks
$=\frac{154}{11} $
$=14 .$
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