Answer :
The statements C and D are true.
What is meant by median ?
Median can be defined as the value in the middle of a given data set in an ascending or descending order.
Here,
For a given set of data, fifty percentage of data points will have a value less than or equal to the median and the other fifty percent will have a greater or equal value.
A) The mean of the values = (90 + 93 + 85 + 89 + 90 + 48)/6
Mean = 82.5
B) The outlier, 48, lowers the average by 34.5 points.
C) The median of the set of points = (89 + 90)/2
Median = 89.5
D) The median before last test = 90
The median after last test = 89.5
E) The median is slightly changed due to the last score by a value of 0.5.
Hence,
The statements C and D are true.
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