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BESC 3010 Exam 2 with correct Answers
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BESC 3010 Exam 2 with correct Answers
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BESC 3010 Exam 2 with correct AnswersInferential statistics are typically contrasted with _____ statistics. - Answer -descriptive
Which of the following is a defining characteristic of experiments? - Answer -
Manipulations
In an experiment, the variable that the researcher manipulates is called the _____
variable. - Answer -independent
If a researcher is able to survey 99% of all students enrolled in statistics classes at a
college, then that researcher has gathered data from a(n)... - Answer -sample
The variable that is measured as the outcome in an experiment is called the _____
variable. - Answer -dependent
A question that asks a person how strong their motivations for religious participation are
using a 1-7 rating scale is at _____ level of measurement. - Answer -either the ordinal
or the interval
For a study to be considered an experiment, it must have... - Answer -a manipulation
In an experiment that looks at the effect of different teaching methods on student
learning, the independent variable is... - Answer -the teaching method
If a web marketer compares the effectiveness of two online ads in getting clicks by
gathering data from 3 million Internet shoppers, the population of interest is... - Answer -
all internet shoppers
A score's frequency is determined by... - Answer -how often it occurs in the data set.
Which type of chart would be most appropriate for a nominal variable? - Answer -bar
graph
A distribution such as income that has most of the people at the bottom or middle but a
few people with extremely high scores, is referred to as... - Answer -positively skewed
A histogram is appropriate when the data are... - Answer -quantitative
, One visual difference between a bar chart and a histogram is that in a histogram... -
Answer -the adjacent bars touch but in a bar chart they are separate.
A normal distribution has a value of skewness that is _____. - Answer -near zero
A frequency bar graph would be most appropriate for which measurement scales? -
Answer -Nominal or ordinal
The normal distribution is... - Answer -mesokurtic
A histogram is not appropriate when the data are... - Answer -at the interval or ratio
level of measurement.
A normal distribution generally has _____ skew. - Answer -no
A uniform distribution is... - Answer -platykurtic
Which measure of central tendency works for nominal variables? - Answer -Mode
Which measure of central tendency is most appropriate for skewed distributions? -
Answer -Median
The three most common measures of central tendency are: - Answer -mean, median,
mode
What is the minimum level of measurement needed to calculate the mode? - Answer -
nominal
Which of these measures is LEAST affected by outliers? - Answer -median
Which measure of central tendency is LEAST efficient? - Answer -mode
Which of the following is NOT a measure of central tendency? - Answer -standard
deviation
What is the minimum level of measurement needed to calculate the median? - Answer -
ordinal
In a negatively skewed distribution, which measure will generally have the highest
value? - Answer -mode
Which measure of central tendency is MOST influenced by outliers? - Answer -mean
In a positively skewed distribution, which measure will generally have the highest value?
- Answer -mean
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