The test scores of 5 learners are: 60, 75, 80, 55, 90. Calculate the mean and median. (5 marks)

Answer 1

To calculate the mean and median of the test scores: 60, 75, 80, 55, 90, we follow these steps:

Mean

1. Sum the scores: \[ 60 + 75 + 80 + 55 + 90 = 360 \]

2. Divide the sum by the number of scores (5): \[ \text{Mean} = \frac{360}{5} = 72 \]

Median

1. Sort the scores in ascending order: \[ 55, 60, 75, 80, 90 \]

2. Identify the middle score:

   • For an odd number of scores (5 in this case), the median is the score in the middle position, which is the 3rd score. \[ \text{Median} = 75 \]

Summary

• Mean = 72
• Median = 75

Thus, the mean is 72 and the median is 75.