a frequency table of grades has five classes (a, b, c, d, f) with frequencies of 2, 12, 18, 4, and 3…

a frequency table of grades has five classes (a, b, c, d, f) with frequencies of 2, 12, 18, 4, and 3 respectively. using percentages, what are the relative frequencies of the five classes? complete the table. grade frequency relative frequency a 2 b 12 c 18 d 4 f 3 (round to two decimal places as needed)

a frequency table of grades has five classes (a, b, c, d, f) with frequencies of 2, 12, 18, 4, and 3 respectively. using percentages, what are the relative frequencies of the five classes? complete the table. grade frequency relative frequency a 2 b 12 c 18 d 4 f 3 (round to two decimal places as needed)

Answer

Explanation:

Step1: Calculate total frequency

$2 + 12+18 + 4+3=39$

Step2: Calculate relative frequency for grade A

Relative frequency of A = $\frac{2}{39}\times100%\approx 5.13%$

Step3: Calculate relative frequency for grade B

Relative frequency of B = $\frac{12}{39}\times100%\approx 30.77%$

Step4: Calculate relative frequency for grade C

Relative frequency of C = $\frac{18}{39}\times100%\approx 46.15%$

Step5: Calculate relative frequency for grade D

Relative frequency of D = $\frac{4}{39}\times100%\approx 10.26%$

Step6: Calculate relative frequency for grade F

Relative frequency of F = $\frac{3}{39}\times100%\approx 7.69%$

Answer:

A. 5.13% B. 30.77% C. 46.15% D. 10.26% F. 7.69%