Step 1: Get the less than cumulative frequency (

Step 1: Get the less than cumulative frequency (fcf). TO get this, Copy the first frequenqy and add diagonally from the list. Repeat until you reach the last frequency row. Class Intervals 25 39 46 31 12 15 20 35 42 47 Step 2: Get the median class. The median class is the class interval where n/2th item is contained, Class Intervals 25 39 31 45 52 59 Median Class 210 12 15 n=420 Step 3: Determine the value of the less than cumulative frequency before the median class (4b), Class Intervals 25 39 31 45 52 59 12 15 20 42 47 35 Step 4: Determine the lower class boundary Of the median class. Subtract the lower limit by 0.5. Class Intervals 25 39 46 31 Xib 24.5 31.5 38.5 45.5 52.5 Step 5: Determine the class size of the class intervals. Simply add 1 from the difference of the upper and lower limits. Class Intervals 25 39 31 45 52 59 Step 5: Determine the frequency Of the median class. Class Intervals Median 25 Mode 31