Statistics and Probability Answers

The mode is best used for nominal categorical data.

a) True
b) False

The mean summarizes the entire data set.

a) True
b) False

You may have a different modal interval from a classmate with the same data.

a) True
b) False

The modal interval can be determined when making a histogram and adjusting the size of the intervals.

a) True
b) False

Measures of central tendency give us the entire picture of a data set.

a) True
b) False

When the mean is the same as the median, the data has a very large number.

a) True
b) False

The median always tells us where the 50th percentile lies.

a) True
b) False

Which measure of central tendency would be most impacted by a very high or very low number?

a) median
b) mode
c) mean
d) modal interval

In the video for Minds On, Hans Rosling mentioned the average number of legs that people have in Sweden is 1.999. What would be the Median?

a) Not enough information
b) 1 because there is a possibility of 0,1 or 2 legs
c) 1.999
d) 2

A company that makes potato chips claims that the mean weight of chips in its 8-ounce bag is greater than or equal to 8-ounces. Write the null and alternative hypotheses you will use to test this claim. State the hypotheses as mathematical expression