Answer: X =5/2, 15/2 x=2.5, 7.5
Step-by-step explanation:
Answer:
hope it helps you .......

Get x to one side
So minus 90 from each side

-90÷-3=30
Answer: x=30
Explanation
Part A
We can use the formula below to find the mean.

We will then have;

Mean = 6.2632
Part B
Since the data set is odd.

Answer: From the column of cumulative frequency cf, the median is 7