Unit 1 Study Guide

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1. Which of the following questions would be best to ask if you want to collect data to create a histogram?

• A. What is your favorite ice cream?
• B. What is your favorite subject?
• C. Which bus do you ride to school?
• D. How many hours do you spend studying math each week?

2. You want to find out how much time students in your school spend on homework. Which of the following would be the best way to collect the necessary data?

• A. Ask students what their favorite subject is.
• B. Observe students during math class.
• C. Conduct a survey on how long each student spends on homework.
• D. Observe students during lunch.

3. Suppose you want to find out which grade level plays more video games. You want to compare the percentage of 7th graders who play video games weekly to the percentage of 8th graders who play video games weekly. Select the best option for collecting accurate data.

• A. Select 40 students in 7th graders and 40 students in 8th graders on the trivia team and ask if they play video games weekly
• B. Randomly select 40 students in 7th graders and 40 students in 8th graders and ask if they play video games weekly
• C. Select 40 students in your Social Studies class and ask if they play video games weekly
• D. Randomly select 80 students who play video games weekly and ask them if they are in 7th or 8th grade

4. Mr. Mack tracked the number of student messages he received each day as given in the following table. He then made histograms to match his data. Select the histograms that display the data correctly.

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5. Ms. Fredrick wanted to graph the test scores from the last test given. Here are the scores: 18, 93, 76, 99, 81, 80, 37, 42, 58, 22 Ms. Fredrick is trying to determine what intervals to use to best represent this data. Which statement below is true?

• A. Ms. Fredrik will use an interval of 5, there will be fewer bins with more data points in each bin.
• B. Ms. Fredrick will use an interval of 25, there will be fewer bins with fewer data points in each bin.
• C. Ms Fredrick will use an interval of 5, there will be more bins with fewer data points for each bin.
• D. Ms. Fredrick will use an interval of 25, there will be fewer data points in each bin.

6. Which of the following statements are true?

• A. The highest score can be found on the histogram.
• B. The median score made by students can be found on the line plot.
• C. The least frequent score by students can be found on the line plot and the histogram.
• D. The number of students who scored at least 12 points can be found on both the histogram and line plot.

7. A nutritionist is studying the calorie content of meals at a local restaurant. They made a histogram with the data for the calorie count in each meal served. Based on the histogram, choose the true statements.

• A. You notice that the intervals aren't consecutive.
• B. You can notice the amount of calories in most meals.
• C. You notice that the number of calories is evenly distributed.
• D. You notice that most meals have fewer than 200 calories.

8. Jose recorded all his 6th grade assessment scores. Jose decided to make a box plot with his data, which box plot would represent Jose's data? 86, 91, 97, 88, 81, 97, 100, 95, 91, 99, 75, 99, 95, 78, 80

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9. The box plots show the test scores between two students at OCHS. What is the difference of the interquartile ranges for Alannis and April?