# American Public University Measures of Central Tendency and Variability Project

• February 04, 2022/

### Description

Homework Assignment #1 – Measures of Central Tendency and Variability (remember the equations below, for computing Z and the Variance):

• You will need to take the 7 raw scores from the table below, fill in each space in the table, and answer questions A through F below.You need to make sure that you round everything to the hundredth decimal, as described in the Tegrity modules.
• You will need to take the 7 raw scores from the table below, fill in each space in the table, and answer questions A through F below.You need to make sure that you round everything to the hundredth decimal, as described in the Tegrity modules.
 Participant Score Sum of Squares score 1 48 2 86 3 74 4 76 5 60 6 46 7 60
• Mean =
• Median =
• Mode =
• Variance ( =
• Standard Deviation (=
• What is the estimated percentile for the participant with the highest and lowest z-score above?
• Lowest % & corresponding z-score =
• Highest % & corresponding z-score =

 Participant Score Sum of Squares score 1 14 2 32 3 30 4 29 5 17 6 22 7 15
• Mean =
• Median =
• Mode =
• Variance ( =
• Standard Deviation (=
• What is the estimated percentile for the participant with the highest and lowest z-score above?
• Lowest % & corresponding z-score =
• Highest % & corresponding z-score =