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Scatter Plots – Age and Reaction Time
By: Heather, Robyn & Ryan
Digital Resource 1http://www.youtube.com/watch?v=9Iw3a_LtJVE
OverviewDeclarative and procedural knowledge.Defining the Key terms.Why do we use scatter plots?Time for you to create a scatter plot.Using a scatter plot to make predictions.Quick quizMathematical worth of additional three
digital resources.
Declarative & Procedural KnowledgeDeclarative Knowledge Procedural Knowledge
• Key terms:-
scatter plot (scatter diagram),
line of best fit, trend line,
positive and negative relationship/correlation;
Bivariate data;
• Appropriate use of graphs and how to apply this learning.
• How to read and interpret the various patterns and variables of a scatter plot.
• Identify scatter plot trends and make predictions
• Identify uses for scatter plots.
• Create a scatter plot.
• Interpret authentic data to draw conclusions.
• Analyse data and recognise patterns.
Definitions Scatter Diagram – A graph of plotted points that show the
relationship between two sets of data.
Correlation – When the two sets of data are linked together; Co (meaning ‘together’), and Relation.◦ You will also see the words, Relationship and association.
DefinitionsPositive Correlation – When the values
increase together.Negative Correlation – When one values
decrease and the other increases.No Correlation - Where a change in one
set of data has no effect on the other set.
DefinitionsLine of best fit – To find the direction of a
correlation between two variables.Trend line - A line on a graph indicating a
statistical trend
DefinitionsBivariate data - a set up of data made up
of two variables.For example, comparing height to weight
or age to reaction time.
Scatter Plot Data:Age Reaction Time
18 0.43
22 0.43
28 0.45
32 0.45
38 0.46
42 0.46
48 0.47
52 0.47
58 0.48
62 0.50
68 0.52
Age vs. Braking reaction time(Stopping a car)
5 15 25 35 45 55 65 750.42
0.44
0.46
0.48
0.5
0.52
0.54
Reaction TimeLine of best fit
Age vs. Braking reaction time(Stopping a car)
5 15 25 35 45 55 65 750.42
0.44
0.46
0.48
0.5
0.52
0.54
Reaction TimeLine of best fitLine of Best fit
What Relationship is this?Does the increase in temperature impact
sunscreen sales? What do you think this scatter plot would look like?
What Relationship is this?If the price of bananas increase does this
effect the amount of bananas sold? What would this scatter plot relationship look like?
What Relationship is this?If we plotted how old you are, and the
results you got for your maths test, what correlation is there?
Visit our wiki to find out more
http://mathshrr.wikispaces.com
Thank you