H3.3 Q&A GRADE A
The value that would be right in the middle if you were to sort the data from smallest to
largest is called the ______. - (correct answer)The median is the value that would be
right in the middle if you were to sort the data from smallest to largest. About 50% of the
observations are below it and about 50% of the observations are above it.
For what purpose is the median used? - (correct answer)The median is a typical value
of a data set. It is used particularly when the distribution is skewed.
The median is often used for which of the following types of distribution? - (correct
answer)The median is often used for skewed distributions. The mean is not often used
for skewed distributions because skew affects the mean more than it affects the median.
When a distribution is skewed, the _______ is used to measure the center and the
_______ is used to measure variation. - (correct answer)The mean and standard
deviation are used to measure the center and variation, respectively, when a distribution
is symmetric.
The interquartile range tells us how much space the _____ of the data occupy. - (correct
answer)The interquartile range tells us how much space the middle 50% of the data
occupy. It is found by subtracting the third quartile from the first quartile.
Name two measures of the center of a distribution, and state the conditions under which
each is preferred for describing the typical value of a single data set.
What are two measures of the center of a distribution? - (correct answer)Mean and
median are both designed as different ways to find what is a "typical" value of the
distribution.
Under what conditions is the median preferred? - (correct answer)The median provides
a better measure of center when the data is skewed or has outliers because the
presence of an outlier has a much greater effect on the mean.
The value that would be right in the middle if you were to sort the data from smallest to
largest is called the ______. - (correct answer)The median is the value that would be
right in the middle if you were to sort the data from smallest to largest. About 50% of the
observations are below it and about 50% of the observations are above it.
For what purpose is the median used? - (correct answer)The median is a typical value
of a data set. It is used particularly when the distribution is skewed.
The median is often used for which of the following types of distribution? - (correct
answer)The median is often used for skewed distributions. The mean is not often used
for skewed distributions because skew affects the mean more than it affects the median.
When a distribution is skewed, the _______ is used to measure the center and the
_______ is used to measure variation. - (correct answer)The mean and standard
deviation are used to measure the center and variation, respectively, when a distribution
is symmetric.
The interquartile range tells us how much space the _____ of the data occupy. - (correct
answer)The interquartile range tells us how much space the middle 50% of the data
occupy. It is found by subtracting the third quartile from the first quartile.
Name two measures of the center of a distribution, and state the conditions under which
each is preferred for describing the typical value of a single data set.
What are two measures of the center of a distribution? - (correct answer)Mean and
median are both designed as different ways to find what is a "typical" value of the
distribution.
Under what conditions is the median preferred? - (correct answer)The median provides
a better measure of center when the data is skewed or has outliers because the
presence of an outlier has a much greater effect on the mean.
