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# Scatter Plots

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## JHM Inc.

on 8 March 2014

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#### Transcript of Scatter Plots

Scatter Plots

Real World Application
This graph could be used in the real world as an example of how much you should weigh around, at a certain age.
The weight of a person could also vary on the height of the person.
As you age, you weigh more.
Creating the Graph
Why is the Graph Meaningful?
Constructed Example
of Scatter Plot
Outside Example
of a Scatter Plot
Source: http://www.disabled-world.com/artman/publish/height-weight-teens.shtml
What is a Scatter Plot?
Definition?
A graph with
two variables
plotted along two axis (x and y axis).
Use?
This graph is helpful to show a
relation
and to see a
trend
between data.
Data Requirements
Two sets of
quantitative
data are needed.
This graph is
numerical
.
Independent
and
Dependent
variables

What is the correlation of the Schoolwork vs. Video Games scatter plot?
A) Positive
B) Negative
C) No Correlation
D) None of the Above

Some people do more schoolwork while others play more video games.
This means that people should balance their time out more.
SCATTER PLOT QUESTION
To construct our scatter plot, you need to have an x-axis (time studying) and y-axis (time playing video games).
You will need to collect data. We used 11 kids, and asked them how many hours they did school work vs. the amount of hours they played video games on a daily basis.
You need to plot the points using the
x and y axis.
C: No Correlation
No line of best fit can be made.
Interpreting the Graph
Look at
axis labels
and the
title
.
Look at each point and determine the
correlation
between the
variables
.
Using your
correlation
, you can
predict
the next few values.
You can see a trend (correlation) in the data.
Scatter plots show the maximum, minimum, and outliers in the data set.
It is sometimes difficult to understand (visualize) and organize large results.
Without a large sample of data there is not a structurally conclusive result.
By: Harsha Santhanam, Matthew Capece, and Jason Qiu
Scatter Plot Question
What is the:
Maximum -
Minimum -
Scatter Plot Correlations
Source: http://www.sixsigmatrainingconsulting.com/uncategorized/scatter-plots-for-visualization-of-relationships/
What is the:
Maximum - 277
Minimum - 257
Summary
Scatter plots are an easy way to give a visual on a collection of data.
They gives a picture of the
relationship
between
two variables
.
Correlations
are easily seen within the data.
Work Cited or Consulted
http://www.disabled-world.com/artman/publish/height-weight-teens.shtml
http://dictionary.reference.com/browse/scatter+plot?s=t
http://www.stat.yale.edu/Courses/1997-98/101/scatter.htm
http://www.bertlynn.com/page6.html
http://www.timetoplaymag.com/articles/videogamereviews/
Line of
Best Fit
Quiz:
The equation of the line is
y=27/4x+9
Using this equation predict what the weight of a
22 year old
male would be.