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Part 1: Practice Data Collection and Analysis
Part 1: Practice Data Collection and Analysis
Step 1: Data Collection
Step 1: Data Collection
The first step in any statistical analysis is data collection. We will use the following anatomical measurements:
Height: Make sure you are using your height in centimeters. If you only know your height in feet and inches, make sure to convert to centimeters.
Shoe size: Convert your shoe size into centimeters using the tables below.
Step 2: Plot a Histogram
Step 2: Plot a Histogram
Determine:
Mode of height distribution
Step 3: Assess Data Trends
Step 3: Assess Data Trends
Determine:
Height (mean ± standard deviation)
Shoe size (mean ± standard deviation)
Step 4: Analysis of Data on Height and Shoe Size
Step 4: Analysis of Data on Height and Shoe Size
Determine:
R2
Is correlation a “strong” correlation (R2 value equal to or greater than 0.7)
Equation for regression line
Step 4: Prediction of Height based on Shoe Size
Step 4: Prediction of Height based on Shoe Size
Determine:
Height of your TA based on the regression line
Whether the calculated height is an underestimate or an overestimate of your TA’s actual height
Percent error for your TA’s height, using the formula:
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