Question

Draw a histogram for the frequency table made for the data in Question $3$, and answer the following questions.
(i) Which group has the maximum number of workers?
(ii) How many workers earn Rs $850$ and more?
(iii) How many workers earn less than Rs $850$?

Answer 1

(i) $830-840$: Maximum number of workers.
(ii) Workers earn more than $Rs850$:
It will be workers who fall in the group of $850-860,860-870,870-880,880-890$
$\therefore$ Sum of number of all workers $=1+3+1+1+4$
$=10$
(iii) The worker who earn less than $Rs850$:
Category will be: $800-810,810-820,820-830,830-840$ and $840-850$
$\therefore$ Sum of numbers of these workers $=3+2+1+9+5$
$=20$