Solution
We need to order the data on increasing way and we got:
68 77 79 81 82 88 89 91 95 99
We can see that we have 10 values then the median can be founded like this:
Median= (82+88)/2 = 85
Then we can find the first quartile with these values:
68 77 79 81
Q1 = (77+79)/2= 78
And the third quartile with these data:
89 91 95 99
Q3 = (91+95)/2= 93
Minimum = 68
Maximum = 99
