Twenty students were asked of what age they received their first cell phone. The dot plots below show the results of the survey in 2015 and 2017. Which statement is true?

The standard deviation of 2016 survey is less than 2017 survey.

The standard deviation of 2016 survey is greater than 2017 survey.

The median of the 2016 survey is less than the median of the 2017 survey

The mean of the 2016 survey is less than the mean of the 2017 survey.

Which statement below is true?

If a set of data has an outlier, the best way to measure spread is the interquartile range.

If a set of data has an outlier, the best way to measure center is the mean.

If a set of data has an outlier, the best way to measure spread is the range.

The median does not measure the center of data.

Which statement is true?

Class A has a higher standard deviation.

Class B has a higher standard deviation

Darnell collected data from two different sales teams in his department, each with four employees. The results of the study, based on each worker's age and sales are listed. Which of the following is a true statement?

The sales range for team 2 is greater than the sales range for team 1.

The median for both is less than $33,500.

The mean sales for team 1 are greater than the mean sales for team 2.

The mean age of workers for team 1 is greater than the mean age of workers for team 2.

The total number of hours the freshman band and sophomore bands spent practicing were recorded. Which correctly describes the spread of both sets of data?

The freshman band is skewed right while the sophomore band is symmetric.

The freshman band is skewed left while the sophomore band is symmetric.

The freshman band is skewed right while the sophomore band is skewed right.

The freshman band is skewed left while the sophomore band is skewed left.

The graph shows local retail stores reporting the number of bottles of sunscreen and the number of life jackets sold on various days of the year. The equation $$y=x+3$$ represents the line of best fit. What does the 3 represent?

3 bottles of sunscreen are predicted to be purchased if 0 life jackets are sold.

0 bottles of sunscreen are predicted to be purchased if 3 life jackets are sold.

A person can only buy 3 bottles of sunscreen.

The number of life jackets a person purchases if they purchase 3 bottles of sunscreen.

The graph shows the percentage of people's budget that they spend on entertainment based off of their age. The equation $$y=-0.14x+13.06$$ represents the line of best fit. What does the -0.14 mean in this equation?

The estimated decrease of 14% spent on entertainment for each year a person ages.

The estimated percentage a person spends on entertainment every year.

A 13 year old is estimated to spend $14 on entertainment.

The estimated increase of 14% spent on entertainment for each year a person ages.

Algebra 1 Data Statistics

Quiz

•

Mathematics

•

9th - 12th Grade

•

Practice Problem

•

Hard

•

CCSS

HSF.LE.B.5, 8.EE.B.5, 8.F.A.3

+3

Standards-aligned

Barbara White

FREE Resource

33 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a line of best fit used for?

To make predictions

To make the graph look pretty

To connect the points

To make it look like you know what you are doing

What type of association does this graph have?

strong positive

moderate negative

weak positive

none

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What type of association does this graph show?

Positive

negative

none

all of the above

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which sentence describes the relationship shown on this scatter plot?

As the temperature decreases, the visitors increase.

As the temperature increases, the number of visitors increases.

As the visitors increase, the temperature decreases.

No correlation

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

Strong positive correlation

Weak positive correlation

Strong negative correlation

Weak negative correlation

Estimate the correlation coefficient of the given data:

.8320

-.9643

1.409

.4864

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the shape of the data distribution?

Skewed right

Skewed left

Symmetric

Normal

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Algebra 1 Data Statistics

33 questions

What is a line of best fit used for?

What type of association does this graph have?

What type of association does this graph show?

Which sentence describes the relationship shown on this scatter plot?

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

Estimate the correlation coefficient of the given data:

What is the shape of the data distribution?

What is the equation of the line of best fit?

Which scatter plot shows a linear relationship between x and y?

Which equations best fits the data?

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