More Practice U12

A linear model was used as a fit for a data set. A residual plot was calculated from the model. What does the residual plot shown suggest about the model?

• The model is likely a good fit because there is a random pattern

• The model is likely not a good fit because there is a non-random pattern

• The model is likely a good fit because there is a non-random pattern

• The model is likely not a good fit because there is a random pattern

A total of 160 students were surveyed from the countries of Australia, Canada, and the United Kingdom. One of the questions asked students to report which hand they considered to be their most dominant.

According to the table, what is the approximate percent of right-hand dominant students who reported being from the United Kingdom?

• 18%

• 86%

• 25%

• 33%

Amani estimated her grocery bill for the month to be $350, but it was actually $395. Calculate the percent of error rounded to the hundredths.

• Even

• Odd

• Neither

• Both

Which function identifies the piece of the following piecewise function that is below the x axis?

The box plots show data about two stores that sold wristbands during the year 2022.

Which statement best represents the box plots?

• Store B had more wristbands to sell than Store A

• On any given day, Store B sold more wristbands than Store A

• If a wristband was chosen at random, it would most likely be one from Store B

• The number of wristbands sold were more consistent at Store B than Store A

The table shows the total amount of dollars (in billions) that the United States spends on pets/pet related products.

Make the following statement true

The best function type to model the data would be ​ (a)   because the r² value is ​ (b)  

• quadratic
• 0.9906
• exponential
• 0.9629
• linear
• 0.9734