One Variable Statistics Review

Unit 10 Review: One Variable Statistics

By Ally Gniadek

Measures of Center

By Ally Gniadek

Measures of Center

By Ally Gniadek

Measures of Spread

By Ally Gniadek

Fill in the Blank

Josh earned 85, 92, 79, and 91 on his first 4 math tests. If he wants his test average to be a 90, what does he need to score on his fifth math test?

Fill in the Blank

Roger bowled 7 games last weekend.

His scores are: 127, 138, 142, 155, 165, 172, and 193

What isthe range of Roger's scores?

Multiple Choice

Gabriella's quiz grades are 88, 92, 92, 96, 98. Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.

• The low score causes the median to decrease.

• The low score causes the mean to increase.

• The low score causes the mean to decrease.

By Ally Gniadek

Multiple Choice

Which has a larger IQR?

• Zach

• Steven

• They have the same IQR

Multiple Choice

Which plot has a median of 50?

• Plot 1

• Plot 2

• Plot 3

• Plot 4

Fill in the Blank

Fill in the Blank

What percentage of data is 19 or more?

Multiple Choice

Which interval has the greatest number of students?

• 48-51

• 56-59

• 60-63

• 64-67

Multiple Choice

According to the histogram, how many people are 10 or younger?

• 4

• 6

• 10

• 11

Multiple Choice

What percent of cards sold were valued between $0.50 and $1.00?

• 4%

• 20%

• 25%

• 15%

Scatterplots & Linear Regression

By Ally Gniadek

​* A graph of a set of data points (x,y)

* A way to determine if 2 variable are related to each other

Multiple Choice

What kind of correlation does this scatterplot have?

• Positive Correlation

• Negative Correlation

Multiple Choice

Estimate the correlation coefficient of this scatterplot.

• 0.8

• 0.08

• -0.8

• -0.08