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PELLYKW1A3Chapter Problems

PELLYKW1A3Chapter Problems - Workshop 1 Individual Review...

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Workshop 1 Individual Review Questions 1.1 What is the difference between a sample and a population? 5 1.2 What is the difference between a statistic and a parameter? 5 1.3 What is the difference between descriptive statitics and inferential statistics? 5 1.4 What is an operatons definition and why are operational definitions so important? An operational definition defines something. It is a corresponding variable and help with analysis. 5 1.5 Excel would be useful in statestics because it can help show and quantify statistics in a readable manner 5 1.6 a. Describe the population of interest Population= students at the midwestern university 1.25 b. Describe the sample that was collected Sample= full time first year students 1.25 c. Describe a paramter of interest. Parameter of Interest= student study habits 1.25 d. Describe the statistic used to estimate the parameter. Statistic= percentages calculated as a result of the survey 1.25 1.7 a. Describe the population of interest Adults in USA 2.5 b. Describe the sample that was collected 1000 adults were polled all 18 and over living within the USA 2.5 1.8 a. Describe the population of interest Population of interest= Adults who reside in America 1.5 b. Describe the sample that was collected Sample= Adults whom have children 18 years or older living in the same household 1.5 c. Is 80% a parameter or a statistic. Explain. Parameter, because it is a metric 2 1.9 a. Describe the population of interest Population of interest= Business Students 2.5 b. Describe the sample that was collected Sample= 96 students selected based on their demographic information 2.5 2.95 0.75 Entrée Number Served Percentage Beef 187 30% Chicken 103 16% Mixed 30 5% Duck 25 4% Fish 122 19% Pasta 63 10% Shellfish 74 12% Veal 26 4% Totals 630 100% b.Construct a bar chart, a pie chart, and a Pareto chart fort the type of entrees ordered. 0.75 0.75 0.75 c. Do you prefer using a Pareto chart or a pie chart for these data? Why? A pie chart- it is easier to read 1 Beef, Chicken, and Fish are the three most common types of entrees 1 2.97 a.Construct a pie chart and a Pareto chart for the percentage of counties using the various methods. 1 \ 1 1.5 Voting has predominatly moved towards electronic c. What differences are there between the methods used in 2000 and 2006? Electronic and Optically Scanned paper ballots are drastically increased 1.5 2.99 1 Score Bands Frequency PercentageCummulative Percentage 0 but less than 10 7 14% 14% 10 but less than 20 7 14% 28% 20 but less than 30 14 28% 56% 30 but less than 40 8 16% 72% 40 but less than 50 0 0% 72% 50 but less than 60 2 4% 76% 60 but less than 70 2 4% 80% 70 but less than 80 1 2% 82% 80 but less than 90 1 2% 84% 90 but less than 100 1 2% 86% 100 but less than 110 0 0% 86% 110 but less than 120 2 4% 90% 120 but less than 130 2 4% 94% 130 but less than 140 1 2% 96% 140 but less than 150 0 0% 96% 150 but less than 160 1 2% 98% 160 but less than 170 1 2% 100% 50 b. Construct a histogram and a percentage polygon.

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