The mean is the measure of central tendency most likely to be affected by an extreme value (outlier).
question
The statement is false. All quantitative data set have medians.
answer
Some quantitative data sets do not have medians.
question
The statement is true.
answer
A data set can have the same mean, median, and mode.
question
The value that lies in the middle of the data when the data set is ordered.
answer
What is the definition of median?
question
The data entry that occurs with the greatest frequency.
answer
What is the definition of mode?
question
The sum of the data entries divided by the number of entries.
answer
What is the definition of mean?
question
The mode is the data entry that has the highest frequency.
answer
In this distribution, how is the mode determined?
question
nominal
answer
If the data set isn't skewed what it is?
question
Median
answer
When the data set is skewed, the _______is the preferred measure of central tendency.
question
Mode
answer
The _____ best describes a nominal data set.
question
The range is found by subtracting the minimum data entry from the maximum data entry.
answer
Explain how to find the range of a data set.
question
It is easy to compute.
answer
What is an advantage of using the range as a measure of variation?
question
It uses only two entries from the data set.
answer
What is a disadvantage of using the range as a measure of variation?
question
The units of variance are squared. Its units are meaningless.
answer
Why is the standard deviation used more frequently than the variance?
question
The standard deviation is the positive square root of the variance. The standard deviation and variance can never be negative. Squared deviations can never be negative.
answer
Explain the relationship between variance and standard deviation. Can either of these measures be negative? Explain.
question
When calculating the population standard deviation, the sum of the squared deviation is divided by N, then the square root of the result is taken. When calculating the sample standard deviation, the sum of the squared deviations is divided by -1, then the square root of the result is taken.
answer
Let N be the number of data entries in a population and n be the number of data entries in a sample data set. Choose the correct answer below.
question
When given a data set, one would have to determine if it represented the population or if it was a sample taken from the population. If the data are a population, then sigma is calculated. If the data are a sample, then s is calculated.
answer
Given a data set, how do you know whether to calculate stand deviation or s?
question
Both estimate proportions of the data contained within k standard deviations of the mean.
answer
What is a similarity between the Empirical Rule and Chebychev's Theorem?
question
The Empirical Rule assumes the distribution is aproximately symmetric and bell-shaped and Chebychev's Theorem makes no assumptions.
answer
What is a difference between the Empirical Rule and Chebychev's Theorem?
question
The sum of the data entries divided by the number of entries.
answer
How do you find the population mean?
Haven't found what you need?
Search for quizzes and test answers now
Quizzes.studymoose.com uses cookies. By continuing you agree to our cookie policy