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# BMI v Mile Time

AP Stats Project
by

## Kaylee Dao

on 4 January 2013

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#### Transcript of BMI v Mile Time

BY: Brianna Duong
Cassidy Dao
Danielle Brown
Vy Hoang BMI v Mile Time of a Freshman The Problem Conclusion Does body fat affect the time a freshman takes to run a mile?
We explored the relationship between body mass index (BMI) and how fast a freshman can run a mile. Before we collected our data, we assumed that the higher the BMI someone has, the more time it will take them to run a mile where as a someone with a lower BMI could run it in a shorter amount of time. Predictions Analysis, Organization, and Interpretation of Data This set of data shows us that the more BMI a freshman has, the longer it will take them to finish a mile. From our calculations, we can roughly predict the amount of time a freshman can run a mile if we are given their BMI as well. What is BMI? BMI is a measure of body fat based on height and weight. This differs from just weight because weight includes muscle mass, bone mass, water weight etc. whereas BMI measures body fat. Why a mile? We chose to use a mile as our distance measurement because every freshman in California is required to run it at least twice a quarter so this distance would not be new to them. Data Description We collected the data from Mrs. Findley’s Freshmen Physical Education fitness cards every underclassman must fill out. In these fitness cards, everyone is to record their basic information including name, grade, gender, etc. and their fitness levels on certain exercises such as push-ups, sit-ups, and mile times along with their height, weight, and body mass index (BMI). We took their mile time and BMI for our data. Explanatory variable: BMI
Response variable: Mile Times
Y-intercept: Lowest percent of body fat a freshman can have
X-intercept: Right when the timing starts to run the mile
Factors that may be the cause of outliers: athlete muscle mass, lung capacity, asthma, etc.
Positive, Linear relationship DATA! BMI (%)
18
16
22
18
21
17
22
20
18
16
21
28
21
24
17
21
26
31
27
26
27
24
21
32
36 Mile time (Minutes)
6.500
6.883
7.917
8.417
8.833
8.900
9.050
9.117
9.183
9.217
9.600
9.867
10.267
10.367
10.750
10.867
11.000
11.100
11.217
11.333
11.950
12.000
12.117
12.200
15.100 r=0.7532
Full transcript