Hw 13; Unit 4 test Review

Presentation

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Mathematics

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9th - 12th Grade

•

Medium

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CCSS

HSS.ID.C.8, HSS.ID.C.9, 6.SP.B.5

+16

Standards-aligned

Jesse Idy

Used 1+ times

FREE Resource

8 Slides • 36 Questions

This HW is similar to the upcoming test on Unit 4: Statistics

Be sure to have a paper and calculator in hand!

Topic 1: Correlation

^{Calculator Steps to find the Correlation Coeficent (r):}

^{To add data: To find correlation (r=)}

Stat
Edit
Put in data for L1 and L2

Stat
Calc
Click on #4 Lin Reg
Enter, Enter, Enter, Enter

Topic 2: Linear Regression

^{Calculator Steps to find the Linear Regression Equation (y=ax+b):}
^{To add data:}^{To find the linear reg}^{round a and b}
^{plug into equation}

Stat
Edit
Put in data for L1 and L2

Stat
Calc
Click on #4 Lin Reg
Enter, Enter, Enter, Enter

Multiple Choice

Correlation coefficient is the statistic that measures the strength and direction of a linear relationship between two variables.

True

False

Multiple Choice

If r=0, there is a strong correlation.

True

False

Multiple Choice

A correlation shows that two things are

causing each other

unrelated

Multiple Choice

Which example shows CORRELATION?

I put water in the freezer and now I have ice.

The alarm clock went off and I woke up.

Temperature and the amount of people at the beach.

Multiple Choice

Estimate the value of r:

0.03

-1

0.79

- 0.72

Multiple Choice

What type of correlation does this graph have?

Positive correlation

Negative correlation

No correlation

Constant correlation

Multiple Choice

What type of correlation does this scatter plot show?

Positive correlation

Negative correlation

No correlation

Constant correlation

Multiple Choice

Estimate the correlation coefficient for this scatterplot.

r = 1.2

r = 0.89

r = 0

r = -0.89

Multiple Choice

Given the following Scatter Plot, select the option that is most likely the r value.

$r=-.45$

$r=-.981$

$r=.728$

$r=.12$

Multiple Choice

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.

Use the steps to find it in your calculator.

y = 1.5x + 12

y = 12x + 1.5

y = 0.67x - 8

y = -8x + 0.67

Multiple Choice

What is the closest correlation coefficent for the set of data in the table?

(look at your calculator)

r=.95

r= -.55

r= -. 94

r=.21

Multiple Choice

In a scatterplot, an outlier...

...is something we didn't learn

...is a puppet with a long nose named Pinocchio

...is a point that is far outside the main cluster of points/ordered pairs

...is a really naughty point who doesn't tell the truth when outside

Multiple Choice

r = -0.3 is considered to have...

moderate negative correlation

weak negative correlation

no correlation

strong negative correlation

Multiple Choice

A person travels by car. They record their miles driven in a data table. Calculate the linear regression equation of this data.
(keep this information on your calculator for the next question)

y = 61.93x - 1.79

y = -1.79x + 61.93

y = 0.016x + 0.03

y = 0.03x + 0.016

Multiple Choice

Explain what the correlation correlation means in the context of this situation

There is a strong positive correlation between the time driving and the total distance driven in miles

There is a weak positive correlation between the time driving and the total distance driven in miles

There is a strong negative correlation between the time driving and the total distance driven in miles

There is no correlation between the time driving and the total distance driven in miles

Mean
Median
Standard Deviation
Minimum/ Maximum (Range)
Q1 and Q3 (IQR)
Outliers

We use 1 Var Stats to find the:

Topic 3: 1 Var Stats

Dot Plots
Whisker Plots
Outlier Formula

Multiple Choice

What does this symbol represent? $\overline{x}$

standard deviation

median

mode

mean

Multiple Choice

Compare the mean and median of the following set: 1, 2, 3, 4, 5.

Mean is greater than median

Mean is less than median

Mean is equal to median

Cannot be determined

Multiple Choice

Determine the IQR for this set of data. 12, 13, 14, 15, 17, 18, 19, 19, 22, 23

17.5

Multiple Choice

What is the standard deviation of the sample:

22,19,45,10,13,9

15.856

13.411

12.243

19.66

Box and Whisker Plots

IQR = Q3 - Q1

Multiple Choice

What is the median of the data?

200

100

140

Multiple Choice

What data value is the upper quartile (Q3)?

Multiple Choice

Which box and whisker plot has the highest median?

Top plot

Bottom plot

Dot Plots

Multiple Choice

What is the range of the data shown?

(Range= Max- Min)

Multiple Choice

How many total students were surveyed about their number of brothers and sisters? (add up all of the dots)

Multiple Choice

What is the mode of the data?

(Mode= number that repeats most)

Multiple Choice

How many students did their homework in less than 6 hours?

Multiple Choice

How many students spent 7 hours doing homework that week?

Two Way Frequency Tables

Some questions will ask you to find percentages on the table's data... use

Some questions will ask you to fill in the rest of the values by subtracting from the total

Multiple Choice

What percentage of males drive sports cars?

35%

16.25%

65%

25%

Multiple Choice

How many sophomores like burritos and pizza?

Multiple Choice

How many people purchased no food and no drink?

200

Multiple Choice

What percentage of students choose waffles?

37%

33%

Outlier Formulas

Multiple Choice

How do we calculate the IQR of a data set?

Q1 + Q3

Q3 - Q1

Q1 - Q3

Q1 * Q3

Multiple Choice

When using the IQR to find outliers, which formula will identify the upper limit?

Q3 - 1.5(IQR)

Q1 + 1.5(IQR)

Q1 - 1.5(IQR)

Q3 + 1.5(IQR)

Multiple Choice

Given the data set: 23, 34, 27, 12, 30, 26, 28, 31, 34

Find the IQR.

24.5

32.5

Multiple Choice

Using the information below, identify which of the following is an outlier:
Q1 = 3
Q2 = 7
Q3 = 12

25.5

-8.5

Multiple Choice

Use the 1.5 IQR rule to determine if there are any outliers for the following numbers:
84, 88, 72, 74, 98, 16, 94

Yes, 16 is an outlier.

Yes, 33 is an outlier.

Yes, 98 is an outlier.

There are no numbers less than 39 or greater than 124, therefore there are no outliers.

This HW is similar to the upcoming test on Unit 4: Statistics

Be sure to have a paper and calculator in hand!

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