Question

a professor records the following final grades in one course. construct a frequency table for the grades. a a a a a b b b b b b c c c c c c c c d d d f
complete the table. (type an integer or decimal rounded to the nearest tenth as needed.) grade frequency relative frequency cumulative frequency a

Explanation:

Step1: Count number of A's

Count the number of 'A's in the data set. There are 5 'A's. So the frequency of A is 5.

Step2: Calculate relative frequency of A

The total number of grades is 5 + 6+ 8+ 3+ 1=23. The relative frequency of A is $\frac{5}{23}\approx 0.2174$. As a percentage, it is $0.2174\times100 = 21.74\%\approx21.7\%$.

Step3: Calculate cumulative frequency of A

Since A is the first - ranked grade in the table, the cumulative frequency of A is equal to its frequency, which is 5.

Answer:

Grade	Frequency	Relative frequency	Cumulative frequency