Question
Construct a frequency distribution table from the given cumulative frequency distribution showing the weights of $750$ students in a school:
$a$. Find the number of students whose weight lie in the interval $40-45;b$. Find the interval which has the most number of students.
| Weight $($in $kg)$ | $c.f.$ |
| More Than$ 25$ | $750$ |
| More Than $30$ | $640$ |
| More Than $35$ | $615$ |
| More Than $40$ | $485$ |
| More Than $45$ | $370$ |
| More Than $50$ | $220$ |
| More Than $55$ | $124$ |
| More Than $60$ | $49$ |
| More Than $65$ | $24$ |
| More Than $70$ | $0$ |