Question: 5. Cumulative frequencies A statistics content developer at Aplia wanted to know whether study skills are related to memory quality. She invited students to perform

5. Cumulative frequencies

A statistics content developer at Aplia wanted to know whether study skills are related to memory quality. She invited students to perform an online memory task. The students saw a list of 59 words and were then asked to recognize a list of five new words that were related to words on the original list. Students were also asked to provide their Math SAT scores.

Consider the following (incomplete) grouped frequency distribution table that summarizes the data on five Math SAT score intervals collected from students who volunteered in 2009.

Grouped Frequency Distribution Table for Math SAT Score
Math SAT Score	f	cf	c%
730-800	18	59	100
660-729	18
590-659	13
520-589	8	10	17
450-519	2	2	3

What is the total number of scores in the data set?

Use the dropdown menus to complete the table by filling in the missing cumulative frequencies (cf) and cumulative percentages (c%).

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