Answer:
Mean=51.86
Mode=49
Median=52
Range=6
Explanation:
We are given a data set:
49, 49, 54, 55, 52, 49, 55
We arrange this in ascending order:
49,49,49,52,54,55,55
Mean=sum of all the elements/number of elements
=49+49+49+52+54+55+55/7
Mean =51.86
Mode is that element of the data set which has highest frequency i.e. the element which comes most.
Hence, Mode=49
Median is the middle element of the data set arranged in ascending order.
Hence, Median=52
Range=highest element-lowest element
Hence, Range=55-49
Range=6