Analyze Real-World Functional Relationships

How much does it cost to have your lawn mowed for 2 hours?

• $16

• $17

• $18

• $19

When was the greatest amount of shoppers at the store?

• 10am

• 1pm

• 6pm

• 2pm

The team scored 50 points. How many points did Kendrick score?

• 12 points

• 20 points

• 10 points

• 72 points

What is the main purpose of a line graph?

• to compare two things

• to show trends over time

• to have an independent variable

• so you don't have to read words

Which of the following scenarios is an example of using a scatter plot for making predictions?

• Calculating the exact value of a data point

• Estimating the sales based on advertising spend

• Counting the number of data points above the line of best fit

• Identifying the color of data points

Type question here including an (a)   ​ (b)  

• -8

• 60

• -16

• 16

• 2

What does a scatter plot with points closely following an upward sloping line indicate about the relationship between the two variables being plotted?

• No correlation

• Negative correlation

• Positive correlation

• Constant correlation

A moving company charges $90 to rent a truck for 4 hours or $150 to rent a truck for 8 hours. What equation can be used to model the cost of renting the truck per hour?

y = ​ (a)   ​ (b)   ​ (c)  

• 15x

• 60x

• +

• -

• 30

• 4

• 15

• 60

Tags

8.5.I

What is the primary purpose of analyzing relationships between variables in bivariate data?

• To create graphs

• To understand how changes in one variable affect another

• To collect more data

• To prove that the variables are unrelated

What is the line of best fit in a scatter plot primarily used for?

• To separate different groups of data

• To predict the value of one variable based on the value of another

• To calculate the exact values of all data points

• To create a boundary around all data points