Consider the following frequency distribution of the variable “household yearly income” from a sample of 31 individuals:

[answerhappygod]

Consider the following frequency distribution of the variable
“household yearly income” from a sample of 31 individuals:
Income (in thousand $ )
Frequency
[10-30]
4
(30-X]
7
(X-80]
9
(80-100]
8
(100-150]
3
Before answering the questions, choose a number for X (any
number between 31 and 79 is valid).
1) Calculate the sample mean (show your
calculations)
2) Determine the modal and the median value (Justify
your answer).