question find the median and mean of the data set below: 21,8,9,48 answer attempt 1 out of 2 median = mean =
question find the median and mean of the data set below: 21,8,9,48 answer attempt 1 out of 2 median = mean =
Answer
Explanation:
Step1: Arrange data in ascending order
$8,9,21,48$
Step2: Calculate the median
Since there are 4 data - points (an even number of data - points), the median is the average of the two middle numbers. The two middle numbers are 9 and 21. Median=$\frac{9 + 21}{2}=\frac{30}{2}=15$
Step3: Calculate the mean
The mean $\bar{x}=\frac{8 + 9+21 + 48}{4}=\frac{86}{4}=21.5$
Answer:
Median = 15 Mean = 21.5