Posted by Maggie on Wednesday, June 17, 2009 at 1:37pm.
look at the last two columns
first row: no. of students =4, so current sum=4
second row: no. of students = 7, sum of students = what it was in the last row + number of students
= 4+7 = 11
third row: no. of students = 11
sum = 11+11=22
fourth row: (your first ?)
no. of students = 18
new sum = 22+18 = 40
Can you follow my steps?
now continue down for the rest of the chart.
Don't make any arithmetic errors, once you mess up, all answers after that will be wrong.
this is the most awefull explenation of cumulative frequence...... ever!!!!!!!
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