IM Algebra Unit 1 Review

Samantha asked her friends how many pets they have. Her results are seen in the histogram above. How many friends did she ask?

• 4

• 5

• 10

• 11

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.B.4

CCSS.6.SP.A.1

What is the shape of this data distribution?

• Symmetric

• Skewed left

• Skewed right

• Bimodal

Tags

CCSS.6.SP.A.2

CCSS.6.SP.B.4

Roger asked his friends how many times they eat each day. His data are seen in the dot plot. What is the mean number of times his friends eat each day (to the nearest tenth)?

• 4.9

• 5.1

• 5.5

• 6.1

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.A.1

Which of these shows how to find the mean?  Select all that apply.

•  $\frac{\left(3+4+4+4+5+5+5\right)}{7}$  

• The mean is found by ordering the numbers from least to greatest

• The mean is found by adding all of the numbers in a data set and then dividing by the amount of numbers in that data set.

• 4  (the number in the middle)

•  $\frac{\left(3+12+30+24+7\right)}{15}$  

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

Which of the following shows how to find the median of the data? (Select all that apply)

• Add all of the values up and then divide by the number of dots (data points) you have.

• Look at the number line and find the middle number. In this case, the middle number on the number line is 5, so the median is 5.

• Find the most common number

• Order the values from the dot plot from least to greatest and find the middle number.

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

The box plot shows the number of shoes students have. Which of the following are true? Select all that apply.

• The IQR (interquartile range) is 8

• The IQR (interquartile range) is 3

• The range is 8

• The range is 3

• The mean is 11

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

Roxanne measured the lengths of two types of bugs she found in her backyard. Her data are seen in the boxplots above. Select all the true statements.

• The median length of both the ladybugs and beetles is 9 mm.

• The mean length of the ladybugs and the beetles is the same.

• The middle half of the data for the lengths of beetles has more variability than the middle half of the data for ladybugs.

• There is one ladybug that is longer than any of the beetles.

• There is at least 1 beetle that is smaller than any ladybug.

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.A.1

The dot plot shows the number of attempts it took for 22 students to master a puzzle. Select all the true statements.

• The mean is equal to the median.

• A new student named Mr. M tries the puzzle and takes 31 tries to master it. This new datat point will effect the mean more than the median.

• If a 23rd student took 10 attempts to master the puzzle, the median would not change.

• If a 23rd student took 10 attempts to master the puzzle, the mean would not change.

• The data as seen in the dot plot is skewed.

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.A.1

Students in a typing class were tested to see how many words per minute they could type. They were tested at the beginning of the course and at the end of the course. The data is seen in the dot plots. Select all the true statements.

• The mean and median values of words per minute shown in the beginners dot plot are the same.

• The mean number of words per minute increased by the end of the course.

• The median values shown in the dot plots for the beginning and end of the course are about the same.

• The data shows that every student improved during the course.

• The data shows that on average, the students improved during the course.

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.A.1

Data where the values are categories.

• categorical data

• statistical data

• numerical data

• non-statistical data

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.A.4

CCSS.HSS.ID.B.5