Cumulative Frequency Worksheet

Cumulative Frequency Worksheet

Read each question carefully and answer to the best of your ability. Show your work where applicable.

What is Cumulative Frequency?

Cumulative frequency is a running total of frequencies. It helps us find the number of observations that fall below a certain value.

1. Cumulative frequency is a   total of frequencies.

2. When constructing a cumulative frequency table, you add the current frequency to the   cumulative frequency.

3. An ogive is a graph that displays   frequency.

The following data shows the number of hours students spent studying for a math test:

2, 3, 5, 2, 4, 3, 6, 5, 4, 3, 2, 5, 4, 3, 6

1. Create a frequency table and then a cumulative frequency table for this data.

1. In a cumulative frequency graph, what is plotted on the y-axis?

The table below shows the cumulative frequency of scores on a science test for 25 students:

Score (x) | Cumulative Frequency

----------|---------------------

< 50 | 3

< 60 | 8

< 70 | 15

< 80 | 20

< 90 | 23

< 100 | 25

1. How many students scored less than 70?

2. How many students scored between 70 and 80 (inclusive of 70, exclusive of 80)?

1. An ogive always starts at 0 on the cumulative frequency axis.