6. add the averages then take that average
50+74 = 124, 124/2 = 62
answer: 62
8. first put all the numbers in order
4, 5 ,6 ,8 11, 12,14, 15, 23 ,23
Find the middle number, since there are 10 numbers find the average of the 2 middle numbers
11+12 =23/2 =11.5
Lower half data = 4, 5, 6, 8, 11
The middle number of that set is Q1,
Q1=6
9
9, find q3
1, 2, 3, 5, 5, 6, 9
Find middle number (5)
upper half data = 5, 6, 9
Q3= 5 , 6, 9 = 5+10 +15 = 30
so answer is $30