Question

The table shows the Distribution of the Scores obtained by 155 shooters in a shooting competition.

$\begin{array}{cc}\text{Scores}& \text{No. of shooters}\\ 0-10& 10\\ 10-20& 12\\ 20-30& 15\\ 30-40& 8\\ 40-50& 20\\ 50-60& 24\\ 60-70& 7\\ 70-80& 11\\ 80-90& 30\\ 90-100& 18\end{array}$

Use a graph sheet to draw an ogive for the distribution.

Estimate the number of shooters who obtained a score of more than 85%.

• A. 40
• B. 28
• C. 34
• D. 37

Answer 1

The correct option is D 37

For finding the number of shooters who obtained a score more than 85%, take a point U at 85 on the x - axis.

From it, draw a vertical line, which touches the ogive at point V and from it, draw a horizontal line which touches the y - axis at point W. At that point W, we are getting those shooters who obtained a score till 85.

No. of shooters at point W = 118

number of shooters who obtained a score of more than 85% = Total number - No. of shooters who scored till 85
= 155 - 118
= 37
$\therefore$ number of shooters who obtained a score of more than 85% is 37.