Answer the following : Given below the frequency distribution of marks obtained by 199 students. Compute arithmetic mean and S.D.

Answer the following : Given below the frequency distribution of weekly wages of 400 workers. Find the range.

The marks obtained by the students are as follows. Find the mode.

Answer the following based on the graph given below. What is the frequency of AC and DC?

The following table shows frequency distribution of marks of 100 students of 10^(th) class which they obtianed in a practice examination. Find the median of the marks.

Answer the following based on the diagram given below.

Answer the following What do mean by hardware in reference to computers?