Which statement correctly describes the shapes of the dot plots for cars and SUVs?

SUVs: skewed right Cars: Skewed left

SUVs: symmetrical Cars: skewed left

Each of the samples below is randomly selected from a company with 320 employees. Choose which samples are representative samples for the company. Select all that apply.

25 employees on the company email list (assuming all employees have and email account)

25 employees at a companywide assembly

25 employees with 10 years of service or more.

25 employees as they begin their shifts at 3:00 pm

25 employees from the human resource department

The Baltimore Ravens won the Superbowl in 2013. In the same season, the Kansas City Chiefs had a record of 2 wins and 14 losses. The dot plots below show the 40-yard dash times (in seconds) of the defensive backs on each team's roster. Defensive backs mainly defend against passes, and the 40-yard dash is the main measure of speed used in American football. Which pieces of information can be gathered from these dot plots? Select all that apply (Remember that lower 40 yard dash times are faster)

The speed of the defensive backs on the Ravens varies noticeably more than the speed of the defensive backs on the chiefs.

The fastest defensive back in the entire league plays for the Ravens.

The Ravens have more defensive backs than the Chiefs.

The defensive backs on the Ravens are faster on average.

All defensive backs on the Ravens are faster than all defensive backs on the Chiefs.

At the Olympic Games, many events have several rounds of competition. One of these events is the men's 100 meter backstroke. The dot plots show the times (in seconds) of the top 8 finishers in the semifinal and final round at the 2012 Olympics. Which information can be gathered from these dot plots? Select all that apply. (Remember that lower swim times are faster.)

Individually, each of the swimmers swam faster in the finals than they did in the semifinals

The times in the finals vary noticeably more than the times in the semifinals.

The swimmers had faster times on average in the finals.

One of the swimmers was disqualified from the finals.

The man who swam fastest in the semifinals swam noticeably faster in the finals.

A department store receives a shipment of 1,500 dishes. Out of a random sample of 10 dishes, 2 are broken. How many dishes would you expect to be broken in the entire shipment? Select all that apply

20% of the dishes will be broken

There are 3,000 people in a travel club. A random sample of 50 of the people in the club found that 12 people like vacations to the mountains best. Select statements that are supported by the sample data. Select all that apply.

About one-quarter of the people sampled like mountain vacations best.

An estimated 720 people in the travel club like mountain vacations best.

More than 2,000 people in the travel club would prefer other vacations over mountain vacations

About 12% of the people in the travel club like mountain vacations best.

Fewer than 500 people in the entire club would likely say they enjoy mountain vacations best.

Hilary and Ivan will collect data to find out where the seventh-grade students should take their field trip. Which group should they survey to collect the most valid data?

ten random people from each seventh grade class

the first 25 students through the lunch line

all he students in a dance class

Prob and Stats Exam Review

7th Grade

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33 Qs

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Practice Problem

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Hard

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CCSS

4.MD.B.4

Standards-aligned

Barbara White

FREE Resource

33 questions

Show all answers

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which class did better on the Algebra test?

Class 1

Class 2

Not enough information

Can't tell

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

_______ is a part of a group being surveyed.

Sample

Population

Random Sample

Quartile

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

How many more people 19 and under are in the French club than the Spanish club?

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier?

Girls

Boys

Both Plots

Neither

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which data set shows a greater spread?

Chess Club

Checkers Club

They have the same spread.

You cannot tell from the box plots.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Compare the centers and spreads.

Math has a higher median (center) and a wider spread.

Math has a higher median (center) and a smaller spread.

Math has a lower median (center) and a smaller spread.

Math has a lower median (center) and a wider spread.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Is the Cars dot plot skewed left or right?

left

right

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_______ is a part of a group being surveyed.

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Which data set shows a greater spread?

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Which statement correctly describes the shapes of the dot plots for cars and SUVs?

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