Answer:
1.
a.)D3 = Value of 3 (30 + 1) / 10.
b.)D3 = Value of 9.3rd position, which is 0.3 between the scores of 65 and 66.
c.)Thus, D3 = 65 + 1 (0.3) = 65.3.
d.)30% of the 30 scores in the observation fall below 65.3.
2.
a.)Find the percentile of your data set.
b.)Find the number of items in the data set
c.)Multiply the sum of the number of items and one by 100
d.)Divide the percentile by the product of 100 and n+1.
