Measures of Cen...

Find the mean of the above data.

Walmart supermarket recorded the length of time, to the nearest hour, that a sample of $100$ cars was parked in their lot. Estimate the average hour using direct method.

Find the arithmetic mean of the children's height using direct method.

A group of $50$ house owners contributes money towards children's education of their street. The amount of money collected is shown in the table below: (use direct method).

The fruit vendor has apples packed in boxes. Each box contains different numbers of apples. The following was the distribution of apples according to the number of boxes. Find the mean number of Apples kept in a packing box using the direct method. 

$30$ people gave money for donation. Find the average amount of money collected. (use  Assumed mean).

The marks obtained by $20$ students of Class $X$ of a certain school in a English paper consisting of $100$ marks are presented in table below. Find the mean of the marks obtained by the students using step deviation method.

What is the average weight of $40$ people whom are diagnosed for thyroid? (use  Assumed mean method).