Algebra 1 Midterm 1 Study Guide

1.Bella created the box-and-whisker plot shown below to represent her Algebra I homework grades throughout the year. Based on Bella's plot, which of the following is closest to her median homework grade for the year?

• 70

• 80

• 85

• 90

2.A set of eight data points is shown below. 20, 24, 19, 22, 30, 26, 27, 24 If a new data point of 8 is added to the data set, which statement is true?

• The mean and median will decrease.

• The mean will decrease and the median will be unchanged.

• The median will decrease and the mean will be unchanged.

• The mean and median will both increase.

3.A box plot representing a data set is shown. What is the interquartile range of the data set?

4.A data set is represented by the plot below. Every "x" represents 1 data point. What is the mean of the data? Type your answer in the box.

5a The number of perfect test scores for each student in Mrs. Smith's class are 3, 2, 3, 1, 0, 7, 1, 13, 1, 0, 2, 3, 1 and are represented by one of the figures below.

• Figure 1

• Figure 2

• Figure 3

• Figure 4

5b. [CHOICE 2] represents the center of the data.

• 0

• 1

• 2

• 3

6.Three football teams have competed in five games each, and their points scored are listed in the table. Aaron plans to join the team with the best mean points per game. Which team will Aaron join? Select an answer from each dropdown menu to make the following sentence true. Aaron will join [CHOICE 1], because their mean score is [CHOICE 2].

7.The box-and-whisker plots below display the distributions of annual temperatures, in degrees Fahrenheit, for Pallet Town and Cerulean City. Which statement is true?

• A. Pallet Town’s bottom 25% of temperatures are lower than all of Cerulean City’s temperatures.

• B. Pallet Town has a higher median temperature than Cerulean City does.

• C. All of Cerulean City’s temperatures are higher than Pallet Town’s temperatures.

• D. Cerulean City has a greater range of temperatures than Pallet Town.

8 Part 1 Automobile drivers in two different groups were surveyed about their average driving speeds. The box-and-whisker plot shows the distributions of speeds, in miles per hour, for drivers in Group A and Group B. Drag each description on the left to the appropriate group on the right.

This group had a greater median driving speed.

• Group A

• Group B

8 Part 2 Automobile drivers in two different groups were surveyed about their average driving speeds. The box-and-whisker plot shows the distributions of speeds, in miles per hour, for drivers in Group A and Group B. Drag each description on the left to the appropriate group on the right.

This group had the slowest driver

• Group A

• Group B