1)
A population is an entire set of individuals, objects, or measurements of interest. True
False
2)
Data measured on a nominal scale can only be qualitative variables that are measured and recorded as labels or names. True
False
3)
There are four levels of measurement: qualitative, quantitative, discrete, and continuous. True
False
4)
The order in which runners finish in a race would be an example of a continuous variable. True
False
5)
The number of children in a family is a discrete variable. True
False
BUS 226-1N1 – Business Statistics Exam 1 – Chapter 1 and 2 Mr. Bullard Student Name:___________________________________________Date:_____________ TRUE/FALSE - Circle 'True' if the statement is true and Circle 'False' if the statement is false. (1 point each). 1)A population is an entire set of individuals, objects, or measurements of interest. Version 14 True False 2)Data measured on a nominal scale can only be qualitative variables that are measured and recorded as labels or names. True False 3)There are four levels of measurement: qualitative, quantitative, discrete, and continuous. True False 4)The order in which runners finish in a race would be an example of a continuous variable. True False 5)The number of children in a family is a discrete variable. True False MULTIPLE CHOICE – Circle/Choose the one answer that best completes the statement or answers the question. (1 point each). 6)The main purpose of descriptive statistics is to A) organize, summarize, and present data in an informative way. B) make inferences about a population. C) determine if the data adequately represent the population. D) gather or collect data. 7)Which of the following is an example of a continuous variable? A) Tons of concrete to complete a parking garage B) Number of students in a statistics class C) Zip codes of shoppers D) Rankings of baseball teams in a league 8)A portion or part of a population is called a ______. A) random survey B) sample C) tally D) frequency distribution 9)What level of measurement is the Centigrade temperature scale? A) Nominal B) Ordinal C) Interval D) Ratio 10)The final rankings of the top 20 NCAA college basketball teams are an example of which level of measurement? A) Nominal B) Ordinal C) Interval D) Ratio FILL IN THE BLANK: (5 points) What is our textbook definition of Statistics (word for word): -The science of collecting, organizing, presenting, analyzing, and interpreting data to assist in making more effective decisions. Levels of Measurement Chapter 2: Freq Distributions (27 Points) FACTS (Fill in Blocks) Cars sold over the past 20 months at Bullard Motors n = k = 21 25 52 53 56 56 59 60 61 62 65 69 70 72 75 79 84 90 93 98 i ≥ i = a.How many classes would you recommend? (1 point) Max Min b.What class interval would you suggest? (1 point) c. What would you recommend for the USE THIS AREA TO lower limit of the first classSHOW WORK (1 point) d. What would you recommend for the upper limit of the last class (1 point) e.Create a Frequency Distribution Table. (7 points) Lower Boundary upto Upper Boundary Mid point Frequency Cumulative Frequency Note: You may not need all of these rows, it depends on how many classes you calculate. f. Create a Cumulative Frequency Distribution Table. (6 points) Less Than Frequency Cumulative Frequency Note: You may not need all of these rows, it depends on how many classes you calculate. USE THIS AREA TO SHOW WORK f.Properly Graph the Histogram(5 points) Histogram of Cars Sold at Bullard Motors g.Properly Graph the Cumulative Frequency Polygon(5 points) Cumulative Frequency Polygon of Cars Sold at Bullard Motors Fill in: Types of variables (8 points) (print clearly)