Measures of Position Assessment

Find the first quartile (Q1) for the data set: 10, 20, 30, 40, 50, 60, 70, 80.

(a)  

What is the first quartile (Q1) of the data set: 3, 7, 8, 12, 14, 18, 20?

(a)  

Calculate the interquartile range (IQR) for the data set: 5, 15, 25, 35, 45, 55, 65.

(a)  

Calculate the third quartile (Q3) for the following data: 5, 10, 15, 20, 25, 30, 35, 40.

(a)  

Calculate the median for the data set: 3, 7, 8, 12, 14, 18, 20, 22.

(a)  

What is the median of the following data set: 1, 3, 5, 7, 9, 11, 13?

(a)  

What is the range of the following data set: 5, 15, 25, 35, 45?

(a)  

What is the range of the data set: 15, 22, 8, 30, 25?

(a)  

Identify any outliers in the data set: 2, 4, 6, 8, 10, 100.

(a)  

Maria scored in the 85th percentile on a test, what does this indicate about her performance compared to her classmates?

• Maria performed better than 85% of her classmates.

• Maria scored exactly at the average level of her classmates.

• Maria performed worse than 85% of her classmates.

• Maria performed better than 15% of her classmates.