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Stats Exam 1 Pierson Questions and Answers A+ Rated
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Stats Exam 1 Pierson Questions andAnswers A+ Rated
A table or listing that shows values and how many times each value occurs
is: - -Frequency distribution
-What is the simplest, most fundamental level of measurement? - -Nominal
-Students are given grades of A, B, C, D, or F on their homework
assignments. The use of letter grades would be an example of what level of
measurement? - -Ordinal
-The scale of measurement that assumes there is an underlying scale of
equal units, but without an absolute zero point, is the ______ scale of
measurement. - -interval
-What reflects the interval or interval/ration level of measurement? - -A
students GPA
-Determining a person's level of education by asking him/her to indicate the
number of school years completed would involve measurement on a
_________ level of measurement. - -ratio and/or interval
-A sample is? - -a portion of a population
-Researchers generally want to be able to generalize their results to a
_______, but to do so, they typically carry out their research on the basis of a
_______. - -Population, sample
-The marketing director of a company wants to conduct research on the
buying habits of the company's customer base. The entire group of
customers would be an example of a ________. - -Population
-The marketing director of a company examines data collected from 125
customers and determines that customers spent an average of $274.55 in
purchases from the company over the past 12 months. The collection or
group of 125 customers would represent a: - -sample
-The average IQ score for the entire population of students enrolled at a
local community college would be an example of a __________. - -parameter
-A researcher wants to know how many emails senior citizens send to
friends each week. If it were possible to find the average for the entire
, population of senior citizens, it would be an example of a _______. - -
parameter
-A researcher records the GPA at the end of the semester for each student in
a sample of 50 freshman students. The average of the 50 GPA scores would
be a: - -statistic
-The term used to describe all possible cases is: - -population
-Statistics that are used to summarize data are referred to as: - -descriptive
statistics
-A parameter is: - -a characteristic of a population
-Descriptive statistics are used to: - -summarize or describe data
-Inferential statistics are used to: - -make statements about a population
based on information from a sample
-A statistic is to a sample as: - -a parameter is to a population
-The measure of central tendency that is sensitive to extreme scores is the:
- -mean
-Mean of the population - -
-A measure that summarizes a distribution in terms of its centrality or
typically is: - -a measure of central tendency
-The score that is located in the middle of a distribution or the score that
cuts a distribution in half is the: - -median
-Mean of a sample - -
-Which of the following is NOT a measure of central tendency? - -The
average deviation
-Which of the following is NOT a measure of dispersion? - -The median
-Which of the following correctly states the relationship between the
standard deviation and the variance? - -The variance is equal to the
standard deviation, squared
-What is the position of the median in the following distribution?
{ 1, 4, 7, 12, 14, 1, 13, 9, 10 } - -5.5th score
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