Variables
Outliers and Predictions
Correlations
Reading & Creating Scatterplots
Line of Best Fit
100
This variable goes on the x-axis.
The independent variable
100
What type of correlation does this graph show?
Positive
100
What are two points on the line of best fit?
What is (16,300) and (22,500)
100
How do you determine where to place the line of best fit?
There should be an equal number of points above and below the line.
200
This variable is impacted by the other variable and is placed on the y-axis.
The dependent variable
200
What type of correlation is shown in the scatter plot?
Negative
200
What is the correlation of this graph? Will the slope be positive or negative?
This graph shows a negative correlation and a negative slope.
300
If I am graphing the number of shots made and the hours of practice for a player, which would be the independent variable?
Number of hours of practice
300
Based on the scatter plot how many CDs would be sold for 2 jars of jam?
What is about 15 CDs?
300
What type of correlation is shown? Write a sentence describing the impact or lack of impact that impulsiveness has on empathy.
No correlation. Impulsiveness has no impact on empathy.
300
How do you make predictions using a scatter plot?
1) Draw a line of best fit. 2) Determine the slope and y-intercept. 3) Write an equation and use it to make a prediction.
300
What are two points on the line of best fit?
Two points on the line of best fit are: (4, 1) and (3, 2)
400
On a graph showing the relationship between salary and years of experience which variable would be the dependent variable?
Salary
400
If a person is 45 years old, based on the scatter plot, what should they expect their income to be?
What is about 45,000.
400
Describe what a positive correlation means for data.
When one variable increases the other variable will also increase.
400
Describe the relationship of this data.
There is no linear relationship.
500
Write a sentence describing the relationship between the average daily temperature and the number of beach visitors.
The number of beach visitors increases as the average daily temperature increases.
500
Describe the relationship of this data.
There is no linear relationship.