00:00 Frequency Distribution - Introduction00:16 Classes00:24 Frequency00:56 Class lower limit and Class upper limit01:09 Class Interval / Class Width01:27 Class Mid-Point / Class Mark02:18 Frequency Curve02:35 Should we have equal or unequal sized class intervals?03:16 How many classes should we have?03:35 What should be the size of each class?04:01 How should we determine the class limits?04:18 Inclusive class interval04:47 Exclusive class interval06:10 Adjustment in class interval07:28 Frequency and Class Frequency08:01 Finding class frequency by tally marking08:36 Loss of Information09:32 Frequency distribution with unequal classes10:18 Frequency Array10:50 Bivariate Frequency Distribution