STATISTIC: 2.2 ORGANIZING QUANTITATIVE DATA.
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Classes - Answer: are the categories by which data are grouped.
The ______ class limit is the smallest value within the class and the ______ class limit
is the largest value within the class. - Answer: lower - upper
The _________________ is the difference between consecutive lower class limits. -
Answer: class width
There is not one particular frequency distribution that is correct, but there are frequency
distributions that are less desirable than others. - Answer: The statement is true. Any
correctly constructed frequency distribution is valid. However, some choices for the
categories or classes give more information about the shape of the distribution.
A researcher wanted to determine the number of televisions in households. He conducts
a survey of 40 randomly selected households and obtains the data in the accompanying
table. Complete parts (a) through (h) below.
(a) Are these data discrete or continuous? Explain. - Answer: The given data are
discrete because they can only have whole number values.
Discrete Variable - Answer: A discrete variable is a quantitative variable that has either
a finite number of possible values or a countable number of possible values
Continuous Variable - Answer: A continuous variable may take on every possible value
between any two values.
The least-squares regression line always travels through the point (x, y). - Answer: True
1
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Quality content you can rely on!
Classes - Answer: are the categories by which data are grouped.
The ______ class limit is the smallest value within the class and the ______ class limit
is the largest value within the class. - Answer: lower - upper
The _________________ is the difference between consecutive lower class limits. -
Answer: class width
There is not one particular frequency distribution that is correct, but there are frequency
distributions that are less desirable than others. - Answer: The statement is true. Any
correctly constructed frequency distribution is valid. However, some choices for the
categories or classes give more information about the shape of the distribution.
A researcher wanted to determine the number of televisions in households. He conducts
a survey of 40 randomly selected households and obtains the data in the accompanying
table. Complete parts (a) through (h) below.
(a) Are these data discrete or continuous? Explain. - Answer: The given data are
discrete because they can only have whole number values.
Discrete Variable - Answer: A discrete variable is a quantitative variable that has either
a finite number of possible values or a countable number of possible values
Continuous Variable - Answer: A continuous variable may take on every possible value
between any two values.
The least-squares regression line always travels through the point (x, y). - Answer: True
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
