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Stats: Review for Test 1 Chapter 1 - 6

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Please select a Team. 1.Team Pie Chart 2.Team Median 3.Team Mode 4.Team Variance 5.Team IQR 6.Team Least Squares 7.Team Normal 8.Team Histogram

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Cent & Spr 50 40 30 20 10LSRLLSRLGraphsGraphs NormalDistributionNormalDistribution MISCMISC Math 256 – Test A 50 40 30 20 10 50 40 30 20 10 50 40 30 20 10 50 40 30 20 10 Final Question Final Question

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Center and Spread

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What is the median of this list of numbers: 116, 118, 121, 121, 121, 122, 128, 133, 138, 191 1.121 2.121.5 3.131 4.75 Go Home Go Home Non-Response Grid

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What is the mean of 4, 4, 5, 6, 21 1.4 2.5 3.8 4.None of the above Go Home Go Home Non-Response Grid

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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 1.60.5 2.39 3.48 4.28 Go Home Go Home Check Score Check Score

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What is the standard deviation of the following sample data? 3, 5, 5, 7, 8, 11 1.6.5 2.2.57 3.2.81 Go Home Go Home Check Score Check Score

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The boxplot below suggests the data is… 1.Uniform 2.Symmetric 3.Skewed to the left 4.Skewed to the right Go Home Go Home Check Score Check Score Non-Response Grid

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Least Squares Regression Line

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Estimate the correlation of this scatter plot. 1.r = 0.2 2.r = 0.5 3.r = 0.7 4.r = 0.9 http://www.seattlecentral.edu/qelp/sets/047/047.html Go Home Go Home Non-Response Grid

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Which of these graphs has the smallest correlation 1.A 2.B 3.C 4.D A B C D Go Home Go Home Non-Response Grid

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Which of these graphs has the weakest correlation? 1.A 2.B 3.C 4.D A B C D Go Home Go Home Check Score Check Score Non-Response Grid

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Find the equation for the Least Squares Regression Line for the data below 1.Y=1.73 - 0.76X 2.Y = 0.92x + 0.52 3.Y = 1.73x – 0.76 4.Y = 0.52x + 0.92 X Y 3 5 4 7 5 6 7 11 8 14 Go Home Go Home Check Score Check Score Non-Response Grid

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The data point marked with a star has 1.A negative residual 2.A positive residual 3.A residual of zero 4.A zero value for the correlation Go Home Go Home Check Score Check Score

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Graphs

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If you can make a bar chart from data, then you can make a pie chart from it as well. 1.True 2.False Go Home Go Home Non-Response Grid

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This stem and leaf plot suggests the distribution of data is… 1.Skewed to the left 2.Skewed to the right 3.Symmetric 4.Uniform 10 6, 6, 7,9 11 1, 2, 2, 4, 5, 6, 7 12 0, 3, 4, 4, 5 13 4, 6, 14 8 15 0 16 17 18 8 Go Home Go Home Non-Response Grid

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This is a question about graphs. Check Score Check Score Go Home Go Home 1.Choice One 2.This is the correct answer 3.Choice Three 4.Choice Four

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This graph has an outlier that is not influential 1.Graph A 2.Graph B 3.Graph C 4.Graph D A B C D Check Score Check Score Go Home Go Home Non-Response Grid

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Based on the scatter plot below, you can do better on the test by taking the test earlier. 1.True 2.False Check Score Check Score Go Home Go Home

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Normal Distribution

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The histogram below suggests a normal distribution. 1.True 2.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. Go Home Go Home Non-Response Grid

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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 cm 2.7.7 cm and 8.3 cm 3.7.4 cm and 8.6 cm 4.7.1 cm and 8.9 cm Check Score Check Score Go Home Go Home

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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? 1.0.1000 2.0.6667 3.1.6667 4.0.2047 Check Score Check Score Go Home Go Home Non-Response Grid

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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% Check Score Check Score Go Home Go Home Non-Response Grid

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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 min 2.52.8 min 3.44.4 min 4.54.4 min Check Score Check Score Go Home Go Home Non-Response Grid

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What room are you in? 1.BI - 4 2.BI - 5 3.BI - 6 4.BI - 9 Go Home Go Home Non-Response Grid

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Miscellaneous

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Who is the GRCC President? 1.Eileen Ely 2.Barak Obama 3.Chrisine Gilliland 4.Ty Sommerville Check Score Check Score Go Home Go Home Non-Response Grid

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Which of the following pop stars is male? 1.Taylor Swift 2.Miley Cyrus 3.Psy 4.Beyonce Check Score Check Score Go Home Go Home

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Who wrote the book “How to Lie with Statistics?” by Darrel Huff 1.David Nelson 2.Brenda Praggastis 3.David Moore 4.Darrel Huff Go Home Go Home Non-Response Grid

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How many red stripes are there on the US flag? 1.7 2.6 3.13 4.25 Check Score Check Score Go Home Go Home

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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. Check Score Check Score Go Home Go Home

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Team Scores 610Team Histogram 530Team Pie Chart 155Team Median 130Team Mode -190Team Normal Go Home Go Home

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