DA #7 Study Guide

Identify which questions are statistical and which questions are not statistical.

Groups:

(a) Statistical

,

(b) Non-statistical

• What year was the Declaration of Independence signed?

• How many minutes did each student in the class spend reading last night?

• How many students are enrolled in Algebra I at our school?

• What are the heights of the students in our class?

• How old is the principal at Northwood School?

The line plot shows the number of minutes it takes for students at Trent Lott Academy to eat breakfast.

What is the unit of measurement that was used to set up this line plot?

• Days

• Ounces

• Minutes

• Students

The following box plot represents the grades that Mrs. Sanchez's students made on their math quiz.

Choose all correct answers.

• The median grade average was 62.

• The highest grade average was 70.

• The lowest grade average was 20.

• The interquartile range is 40.

• More students scored below a 62 than above a 62.

Robert asked each person attending a school play how many siblings they had. Their responses are shown.

1, 2, 0, 3, 1, 4, 2, 1, 0, 2, 3, 1, 0, 0, 2, 1

Which histogram correctly represents the data?

• 
• 
• 
• 

Which question could be answered using a measure of variability?5

• What is the average number of pets owned by students in your class?

• How many students scored above a 90 on the last math test?

• What is the difference between the highest and lowest temperature recorded this month?

• If the total cost of supplies was divided equally among the members of a club, how much would each member pay?

The line plots show the number of minutes it took students in two different classes to complete a math problem.

Which choices make the statements true?

• The top dot plot is skewed left.

• The top dot plot is symmetrical

• The bottom dot plot is skewed left.

• The bottom dot plot is skewed right.

The line plots show the number of minutes it took students in two different classes to complete a math problem.

If a new student were to complete the math problem in 10 minutes, that data point would be an...

• peak

• outlier

• gap

• cluster

If the two students that took 2 minutes move and their data is erased, but a new student joins the class that takes 6 minutes, the data distribution's shape will be...

• skewed right

• skewed left

• uniform

• symmetrical

The data listed below shows the number of visitors at a museum during peak hours for the past 10 days.

150, 120, 180, 135, 200, 110, 140, 160, 125, 175

What is the minimum?

• a

• b

• c

• d