Question

The no. of defects in 20 pieces of cloth each of 100 meter length
is given below:
2, 1, 3, 3, 1, 6, 4, 3, 7, 10, 2, 2, 6, 4, 3, 2, 1, 5, 6, 4.
Draw the appropriate control chart and interpret the result.

Answer 1

You have to make a tally chart so that you know how many 2s or 4s are there. Then you will know the mode, the number with the highest or lowest lenght etc.