What is the formula to get the frequency. Please solve. Please explain how you get the frequency i.e., do you add or subtract or divide or multiply. Please advise. Thank you

Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution. Begin with a lower class limit of 2.720 in., and use a class width of 0.010 in. The screws were labeled as having a length of 2 3 / 4 in. Click on icon to view the data. -X Data table Complete the frequency distribution bel Length (in.) Frequency Screw Lengths (inches) 2.720 - 2.729 2.748 2.756 2.751 2.739 2.734 2.749 2.752 2.723 2.758 2.758 2.730 2.739 2.757 2.746 2.741 2.733 2.757 2.757 2.721 2.745 2.746 2.744 2.744 2.765 2.757 2.759 2.731 2.733 2.758 2.762 2.753 2.743 2.740 2.749 2.750 2.759 2.760 2.769 (Type integers or decimals rounded to th Print Done