Question

Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution. Begin with a lower class limit of 3.720 in., and use a class width of 0.010 in. 3.749 3.757 3.753 3.726 3.731 3.743 3.744 3.725 3.756 3.757 3.754 3.745 3.745 3.732 3.746 3.754 3.727 3.752 3.744 3.723 3.749 3.765 3.754 3.758 3.758 3.731 3.751 3.761 3.757 3.746

Please show steps, I need help on understanding how to do.

Answer 1

Solution :-
Given that,
3.749,3.757,3.753,3.726,3.731,3.743,3.744,3.725,3.756,3.757,3.754,3.745,3.745,3.732,3.746,3.754,3.727,3.752,3.744,3.723,3.749,3.765,3.754,3.758,3.758,3.731,3.751,3.761,3.757,3.746

=> Given that lower class limit = 3.720 , class width = 0.010

=> Frequency distribution table :-

Class Frequency (f)

3.720 - 3.729   4  

3.730 - 3.739   3  

3.740 - 3.749 9  

3.750 - 3.759   12
  
3.760 - 3.769   2

Total = 30