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Math  /  Data & Statistics

QuestionCalculate the average grade for the user based on the given 6-week periods. The grades are as follows:\text{Calculate the average grade for the user based on the given 6-week periods. The grades are as follows:} \begin{align*} \text{1st 6 Weeks:} & \quad 94\% \, (A), \, 93\% \, (A), \, 90\% \, (A), \, 78\% \, (C), \, 71\% \, (C), \, 65\% \, (D) \\ \text{2nd 6 Weeks:} & \quad 60\% \, (D), \, 70\% \, (C), \, 61\% \, (D) \\ \text{3rd 6 Weeks:} & \quad 100\% \, (A), \, 72\% \, (C) \\ \end{align*} Note: N/A entries are not included in the calculation.\text{Note: N/A entries are not included in the calculation.}

Studdy Solution

STEP 1

1. The grades are given as percentages.
2. N/A entries are not included in the calculation.
3. The average grade is calculated by summing all the valid percentages and dividing by the number of valid grades.

STEP 2

1. Identify and list all valid grades.
2. Calculate the sum of all valid grades.
3. Count the number of valid grades.
4. Compute the average grade.

STEP 3

List all valid grades from each 6-week period:
1st 6 Weeks: 94%,93%,90%,78%,71%,65% 94\%, 93\%, 90\%, 78\%, 71\%, 65\%
2nd 6 Weeks: 60%,70%,61% 60\%, 70\%, 61\%
3rd 6 Weeks: 100%,72% 100\%, 72\%

STEP 4

Calculate the sum of all valid grades:
94+93+90+78+71+65+60+70+61+100+72=854 94 + 93 + 90 + 78 + 71 + 65 + 60 + 70 + 61 + 100 + 72 = 854

STEP 5

Count the number of valid grades:
There are 11 11 valid grades.

STEP 6

Compute the average grade by dividing the sum by the number of valid grades:
Average Grade=85411≈77.64% \text{Average Grade} = \frac{854}{11} \approx 77.64\%
The average grade is:
77.64% \boxed{77.64\%}

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