Association
Predictions
Analyzing
Two-Way Tables
Writing Exponential Functions
100
Determine the association shown in the scatter plot below.
What is positive linear?
+100 Bonus Points: Strong
100
Make a prediction for the altitude of the balloon at 2 minutes.
What is 434 ft?
Acceptable: 430-440
100
Write an equation for the trend line for the scatter plot below, given points (0,0) and (5, 20).
What is y=4x?
100
Determine the number of females with 2-door model cars.
What is 44 females?
100
Write an exponential growth function to model the situation. A population of 422,000 increases by 12% each year.
f(x) = 422,000(1.12)^x
200
Determine the association in the scatter plot below.
What is no association?
200
A prediction for the test score of a student who studies 2.5 hours.
What is 78?
Accepted: 77-79
200
Which trend line is the best model of the data?
What is trend line 1?
200
What is the percentage of middle school students wear contacts?
What is 23%?
200
The population of Baconburg starts off at 20,000, and grows by 13% each year. Write an exponential growth model and find the population after 10 years.
f(10) = 20,000(1.13)^10 and population of 67,891
300
Determine the association of the scatter plot below.
What is nonlinear?
300
A prediction for the volume of the tank at 12 minutes.
What is 230 gal?
Accepted 220-240
300
Write the equation for the trend line shown in the scatter plot below, using the two points (0,453) and (10,359).
What is y=-9.4x+453
300
Determine the total number of 3-point shots made by all students (upperclassman and underclassman)
What is 29?
300
The Hippityhoppity bunny decided to have a family reunion at the Magic Forest every 5 years. During the second reunion the family discovered that the number of family members was 154 and was growing at an annual rate of 3.2%. Write an equation to model the growth of the bunny family.
f(x) = 154(1.032)^x
400
Two words to describe the association of the scatter plot.
What is weak negative linear?
400
A prediction for the amount of time passed, when the freezer temperature is 25°
What is 2.5 minutes seconds?
Accepted: 2.4 minutes - 2.6 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
What percent of the students are in 8th grade?
What is 40 or 41 percent?
400
The fish in The Magic Forest Lake were declining at an annual rate at 1.5%. Their current number is estimated at 2500. Write an equation to model the decreasing number of fish.
y = 2500(.985)^x
500
Two words to describe the association for the scatter plot below.
What is strong 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.
What is 48.2 minutes
Accepted 47-49 minutes
500
Predict the number of calories burned after exercising for 40 minutes.
What is 350?
Accepted 340-360
500
Determine the percentage of total students surveyed that are in 6th grade.
What is 28.86%?
Accepted: 29%, 28.9%
500
The squid in The Magic Forest Lake were declining at an annual rate at 5.5%. Their current number is estimated at 50,000. Write an equation to predict the number of squid in the lake in 10 years.
f(10) = 50000(.945)^10 and 28,398 squid