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This activity contains 15 questions.
A statistician summed the observed numerical values of a variable and then divided the total by the number of observations. What measure of central tendency is being found?
Give the median for the temperatures recorded over the course of a day during a record high.
If a data set is arranged in numerical order, it is called a(n) __________.
A ____________ distribution is one in which the values are predominantly located in the center of the distribution with relatively few values falling in the tails.
The property which concerns the relative concentration of values in the center of the distribution as compared to the tails is called __________.
What measure of central tendency is affected by extreme values in a set of data?
None of the choices are correct.
Distributions with two modes are referred to as __________.
Calculate the midrange value for the following data set.
The first quartile for an ordered data set is the value such that ______ percent of the observations are smaller and ________ percent are larger.
Determine the value of the third quartile for the following data set.
The amount of variation or spread of data is called the __________ of the data.
The __________ measures how values spread out or disperse around the mean.
Which of the following statements can
be true for a data set?
The range is equal to zero.
The variance and the standard deviation are equal.
The standard deviation is equal to negative one.
All of the choices are correct.
For the following data set, the range is ________ and the sample standard deviation is ______.
A distribution in which the upper half is a mirror image of the lower half is defined as __________.
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