Cumulative Frequency

Q.

The cumulative frequency table is useful in determining

1. mean

2. median

3. mode

4. all of these

Q. Rita had Rs 300. She spent of her money on notebooks and of the remainder on stationery items. How much money is left with her?

Q. Amit earns Rs 16000 per month. He spends of his income on food; of the remainder on house rent and of the remainder on the education of children. How much money is still left with him?

Q. What is correction factor(C.F) in the rank correlation coefficient.

1. C.F $=\sum (m^2-1)$
2. C.F $=\sum (m^2+1)$
3. C.F $=\sum m^2(m^2-1)$
4. C.F $=\sum m(m^2-1)$