Vocabulary
Association
Predictions
Analyzing
Correlations
100
What is the term used for a piece of data that does not fit with the rest of the data?
Outlier
100
Determine the association shown in the scatter plot below.
Positive linear
100
Make a prediction for the altitude of the balloon at 2 minutes.
434 ft
Acceptable: 433-435
100
Write an equation for the trend line for the scatter plot below, given points (0,0) and (5, 20).
y=4x
100
The size of the bag of popcorn and the price of the the popcorn bag.
Positive correlation
200
When creating a line of best fit, you want to go through the ____________ of the data points.
middle or center
200
Determine the association in the scatter plot below.
No association
200
Make a prediction for the test score of a student who studies 2.5 hours.
78
Accepted: 77-79
200
Which trend line is the best model of the data?
line 1
200
The increase in temperature and the number of snowboards sold.
Negative correlation
300
What is the term for a line on a scatter plot, drawn near the points that approximates the association between the data sets?
line of best fit
300
Determine the association of the scatter plot below.
Nonlinear
300
Using the points (0, 25) and (5, 120), make a calculated prediction for the volume of the tank at 6 minutes.
139 gallons
Solution: m = 95/5 = 19 b= 25 x = 6
y = 19(6) + 25
y = 139
300
Write the equation for the trend line shown in the scatter plot below, using the two points (0, 453) and (10, 359).
y=-9.4x+453
300
The number of hours you work and the amount you get paid.
Positive correlation
400
The term cluster means what?
a group of points that lie close together
400
Determine the association of the scatter plot.
Negative linear
400
Make a prediction for the amount of time passed, when the freezer temperature is 25°
2.5 minutes OR 2 minutes 30 seconds
Accepted: 2.3 - 2.7 minutes
400
Describe a real world relationship that would have a strong positive association.
Possible answer: As number of hours studied increase, test scores would increase.
400
The less you eat, the more you feel hungry.
What is negative correlation?
500
What are the three types of association?
positive, negative and no association.
500
Determine the full association for the scatter plot below.
Nonlinear
500
Given points on the graph, (0,453) and (10, 359), and trend line equation y=-9.4x+453 make a prediction for how long (in minutes) it will take for the balloon to reach the ground. Round answer to the nearest 10th.
48.2 minutes
500
What would be the starting and ending points of the trend line for the following scatter plot.
(8,0) to start and (95,900) to end
Accepted:
Start: x-value 5-10
End: x-value 90-100
500
The relationship between the number of jellyfish in the ocean and the number of text messages you received last Friday.
No correlation