You are given a choice of taking the simple interest on 100,000 invested for 2 years

A student was interested in the
cigarette smoking habits of college students and collected data from an
unbiased random sample of students. The data is summarized in the following
table:







Males Surveyed 50 Females Surveyed 75



Males Who Smoke 20 Females Who Smoke 25



Males Who Do Not Smoke 30 Females Who Do Not Smoke 50



Why is the table NOT a frequency distribution?











A. The number of males does not equal the sum of males that smoke and do not
smoke. 







B. The classes are not
mutually exclusive. 







C. There are too many classes. 







D. Class limits cannot be computed. Reset Selection







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Question 2 of 20



5.0 Points



The main purpose of descriptive statistics is to:







A. data in a useful and
informative manner. 







B. make inferences about a population.







C. determine if the data adequately represents the population. 







D. gather or collect data. Reset Selection







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Question 3 of 20



5.0 Points



A poll of 1,000 voters used to predict the outcome of a statewide election is
an example of:







A. descriptive statistics. 







B. continuous variable measurement. 







C. statistical inference. 







D. deductive statistics. Reset Selection







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Question 4 of 20



5.0 Points



The number of fishing boats shipped from a manufacturer to a dealer each month
is described as a:







A. random variable. 







B. qualitative variable.







C. discrete variable. 







D. continuous variable. Reset Selection







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Question 5 of 20



5.0 Points



The kinds of numbers that can take on any value, either a fraction or integer,
between specified limits are called:







A. random variables. 







B. qualitative variables. 







C. discrete variables. 







D. continuous variables.
Reset Selection







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Question 6 of 20



5.0 Points



Which of the following is an example of a qualitative variable?







A. Number of children in a family 







B. Weight of a person 







C. Color of ink in a pen 







D. Miles between oil changes Reset Selection







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Question 7 of 20



5.0 Points



Data obtained on the preferences of different religious groups for specific
types of network television programming is an example of:







A. random variables. 







B. qualitative variables. 







C. discrete variables. 







D. continuous variables. Reset Selection







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Question 8 of 20



5.0 Points



__________ level data are mutually exclusive and exhaustive, and categories are
scaled according to the amount of the characteristic they possess, and zero
represents a point on the scale.







A. Nominal 







B. Ordinal 







C. Interval 







D. Ratio Reset Selection







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Question 9 of 20



5.0 Points



A bank asks customers to evaluate the drive-through service as good, average,
or poor. Which level of measurement does this classification illustrate?







A. Nominal 







B. Ordinal 







C. Interval 







D. Ratio Reset Selection







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Question 10 of 20



5.0 Points



Information can be misrepresented:







A. through misleading charts and graphs. 







B. by reporting of an association of variables as causation. 







C. by presenting average data that misrepresents sample or population data. 







D. All of the above Reset
Selection







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Question 11 of 20



5.0 Points



The first procedure we use to describe a data set is:







A. differentiation. 







B. classification. 







C. data correlation. 







D. frequency distribution.
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Question 12 of 20



5.0 Points



The number of observations in each class is called the:







A. data set







B. class size 







C. class frequency 







D. class interval Reset Selection







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Question 13 of 20



5.0 Points



Which of the following is not a step used to organize data into a frequency
distribution?







A. decide on the number of classes. 







B. determine the class interval. 







C. prepare the raw data. 







D. set the individual class limits. Reset Selection







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Question 14 of 20



5.0 Points



The _________ can be computed by adding the lower class limit to the upper
class limit and dividing by 2.







A. class midpoint







B. class interval 







C. class mark 







D. class size Reset Selection







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Question 15 of 20



5.0 Points



A set of data consists of 38 observations. How many classes would you recommend
for the frequency distribution?







A. 4 







B. 5 







C. 6 







D. 8 Reset Selection







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Question 16 of 20



5.0 Points



A _________ is especially useful for depicting nominal level data.







A. bar chart 







B. line chart 







C. histogram 







D. pie chart Reset
Selection







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Question 17 of 20



5.0 Points



A set of data consists of 230 observations between $235 and $567. What class
interval would you recommend?







A. 15







B. 25







C. 45







D. 50 Reset Selection







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Question 18 of 20



5.0 Points



Both the _________ and the _________ allow us to get a quick picture of the
main characteristics of the data.







A. frequency distribution chart, polygraph 







B. histogram, frequency
polygon 







C. pie chart, line chart 







D. horizontal bar chart, vertical bar chart Reset Selection







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Question 19 of 20



5.0 Points



A set of data consists of 83 observations. How many classes would you recommend
for the frequency distribution?







A. 5 







B. 6 







C. 7 







D. 8 Reset Selection







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Question 20 of 20



5.0 Points



A stem-and-leaf display is an alternative to a:







A. histogram 







B. frequency distribution 







C. frequency polygon 







D. horizontal bar chart Reset Selection

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