Unit 7 Accommodated Test

Question 2

Which is the best description of a scatterplot?

• a graph of ordered pairs that come close to representing a line with a positive slope

• a graph of ordered pairs used to determine if a relationship exists between two variables

• a graph that shows how two different quantities change over a certian period of time

Question 3

A scatterplot shows a correlation between two sets of data. Which statement is true when a scatterplot is said to have a positive correlation?

• The two sets of data increase together

• One data set increases while the other decreases

• All values in the data set are positive

Question 4

The height of all students in a school and their favorite topping on a pizza being pepperoni, what is the correlation between the heights of students and their favorite pizza topping?

• negative

• no correlation at all

• positive

Question 5

What is the correlation of the scatterplot?

• negative correlation

• no correlation

• positive correlation

Question 6

Which graph best demonstrates a nonlinear relationship?

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• 
• 

Question 7

Marques collected data on the number of students absent as

nal exams approached and displayed the information in a scatterplot.

Which of these shows a trend line that describes the scatterplot?

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• 
• 

Question 8

Shrikant was given some data and was asked to find the line of best

fit for his economics class.

If the graph shown is what he came up with, what is the equation of his line?

Question 9

Several schools turn the thermostat down at the end of the school day in order to conserve energy. The graph shows approximately how this effects the temperature in a

classroom on a winter day. Which of the following best

describes the relationship?

• For each 1° rise in temperature, 3 minutes have passed.

• For each 6 minutes, there is a decline of 2°

  in temperature.

• The temperature decreases 2° every 1 hour.

Question 10

Which data appears to have outliers?

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• 
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Question 11

Based on the scatterplot above, what would an approximate

amount of money for 35 sodas sold?

• $50

• $100

• $30