A class interval table shows: $0$-$10$: $4$, $10$-$20$: $7$, $20$-$30$: $11$, $30$-$40$: $5$, $40$-$50$: $3$. How many observations lie in the interval $20$-$30$?

Question

Aicharya · Accepted Answer

The frequency of class $20$-$30$ is read directly as $11$.

A class interval table shows: $0$-$10$: $4$, $10$-$20$: $7$, $20$-$30$: $11$, $30$-$40$: $5$, $40$-$50$: $3$…

Solution