Stats: Review for Test 1

Chapter 1 - 6

Please select a Team.

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1. Team Pie Chart2. Team Median3. Team Mode4. Team Variance5. Team IQR6. Team Least

Squares7. Team Normal8. Team Histogram

Cent & SprCent & Spr

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LSRLLSRL GraphsGraphs NormalDistributio

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MISCMISC

Math 256 – Test AMath 256 – Test A

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Final Question

Center and Spread

What is the median of this list of numbers: 116, 118, 121, 121, 121, 122, 128,

133, 138, 1911. 1212. 121.53. 1314. 75

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What is the mean of 4, 4, 5, 6, 21

1. 42. 53. 84. None of the

above

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What is the third quartile of this list?

28, 31, 34, 35, 37, 41, 42, 42, 42, 47

49, 51, 52, 52, 60, 61, 67, 72, 75, 77

1. 60.52. 393. 484. 28

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What is the standard deviation of

the following sample data?

3, 5, 5, 7, 8, 11 1. 6.52. 2.573. 2.81

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The boxplot below suggests the data is…

1. Uniform2. Symmetric3. Skewed to the left4. Skewed to the right

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Least Squares Regression Line

Estimate the correlation of this

scatter plot.1. r = 0.22. r = 0.53. r = 0.74. r = 0.9

http://www.seattlecentral.edu/qelp/sets/047/047.html

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Which of these graphs has the smallest correlation

1. A2. B3. C4. D

A B

C D

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Grid

Which of these graphs has the weakest correlation?

1. A2. B3. C4. D

A B

C

D

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Find the equation for the Least Squares Regression Line for

the data below

1. Y=1.73 - 0.76X2. Y = 0.92x +

0.523. Y = 1.73x – 0.764. Y = 0.52x +

0.92

X Y3 54 75 67 118 14

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Non-Response Grid

The data point marked with a star has

1. A negative residual2. A positive residual3. A residual of zero4. A zero value for

the correlation

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Graphs

If you can make a bar chart from

data, then you can make a pie chart

from it as well.

1. True2. False

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Non-Response Grid

This stem and leaf plot suggests the distribution of

data is…1. Skewed to the left2. Skewed to the right3. Symmetric4. Uniform

10 6, 6, 7,911 1, 2, 2, 4, 5, 6, 712 0, 3, 4, 4, 513 4, 6, 14 815 016 17 18 8

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This is a question about graphs.

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1. Choice One2. This is the correct

answer3. Choice Three4. Choice Four

This graph has an outlier that is not

influential

1. Graph A2. Graph B3. Graph C4. Graph D

A B

C D

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Based on the scatter plot below, you

can do better on the test by taking the

test earlier.

1. True2. False

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Normal Distribution

The histogram below suggests a normal distribution.

1. True2. False

Source:  Sokal, R.R. and F.J. Rohlf, 1968. Biometry, Freeman Publishing Co., p 109.  Original data from Sokal, R.R. and P.E. Hunter. 1955. A morphometric analysis of DDT-resistant and non-resistant housefly strains Ann. Entomol. Soc. Amer. 48: 499-507.

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Non-Response Grid

The length of leaves of a particular tree is N(8.0

cm, 0.3 cm). Approximately 95% of leaves are

between what two lengths?

1. 8 cm and 8.3 cm2. 7.7 cm and 8.3 cm 3. 7.4 cm and 8.6 cm4. 7.1 cm and 8.9 cm

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The distribution of the length of house fly wings is approximately N(4.6 mm, 0.3 mm). What proportion of house flies have a wingspan between 4.1 mm and 4.4 mm?

1. 0.10002. 0.66673. 1.66674. 0.2047

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Non-Response Grid

Temperatures inside a kiln are normally distributed with a mean of 1000 and a

standard deviation of 50. What proportion of the interior exceeds 1125 degrees?

1. 0.62%2. 12.5%3. 2.5%4. 49.38%

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The time it takes to complete an exam is approximately normal with a mean of 40 and st. dev. of 10 minutes. How much time will it take for 90% of the students to complete the

exam?

1. 49 min2. 52.8 min3. 44.4 min4. 54.4 min

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What room are you in?1. BI - 42. BI - 53. BI - 64. BI - 9

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Miscellaneous

Who is the GRCC President?

1. Eileen Ely2. Barak Obama3. Chrisine Gilliland4. Ty Sommerville

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Which of the following pop stars is male?

1. Taylor Swift2. Miley Cyrus3. Psy4. Beyonce

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Who wrote the book “How to Lie with Statistics?” by Darrel

Huff

1. David Nelson2. Brenda Praggastis3. David Moore4. Darrel Huff

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Non-Response Grid

How many red stripes are there on the US

flag?1. 72. 63. 134. 25

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Which of the following data is quantitative continuous?

1. The number of weeks a movie stays in a theater.2. The number of tickets sold to the movie each day.3. The number of times the movie is shown on each

day.4. The length of the movie in minutes.

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Team Scores610 Team Histogram

530 Team Pie Chart

155 Team Median

130 Team Mode

-190 Team Normal

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