IM Unit 1

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.5A

What is the shape of this data distribution?

• Symmetric

• Skewed left

• Skewed right

• Bimodal

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.5C

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

•  $\frac{\left(3+4+4+4+5+5+5+5+5+5+6+6+6+6+7\right)}{15}$  

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

• 5 (the most common number)

• 5  (the number in the middle)

Tags

CCSS.6.SP.B.5C

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

• $\frac{\left(3+4+4+4+5+5+5+5+5+5+6+6+6+6+7\right)}{15}$

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

• 5 (the most common number)

• 5 (the middle number)

Tags

CCSS.6.SP.B.5C

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.HSS.ID.A.1

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 the ladybugs is 9 mm.

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

• There is more variation among the lengths of the beetles than the ladybugs.

• The ladybugs have a higher maximum than the beetles.

• The beetles have a lower minimum than the ladybugs.

Tags

CCSS.7.SP.B.4

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.

• The standard deviation is 0.

• 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.

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.

• There was more variation at the beginning of the course than at the end of the course.

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

• The range of the data increased by the end of the course.

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

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

How well do you think you understand one-variable statistics?

• Not well at all.

• A little bit.

• Quite a bit.

• Completely.

Tags

CCSS.6.SP.B.5B