SCI110 Chapter 13

A study of fatalities on amusement rides in the US (Levensen 2005) recorded these number of fatalities from 1994 to 2003:

2 4 3 4 7 6 1 3 2 5

What is the mean number of fatalities per year over this period?

A study of fatalities on amusement rides in the US (Levensen 2005) recorded these number of fatalities from 1994 to 2003:

2 4 3 4 7 6 1 3 2 5

What is the median number of fatalities per year over this period?

A study of fatalities on amusement rides in the US (Levensen 2005) recorded these number of fatalities from 1994 to 2003:

2 4 3 4 7 6 1 3 2 5

What is the standard deviation of the number of fatalities per year over this period?

Which of the following statements are true?

The mean and the median can both be called the "average".
The standard deviation measures the amount of variability in a set of data
The range is a measure of variability in a set of data (but it usually too simple to be useful)
The IQR measures the amount of variability in a set of data
The mean and the median are not always the same value

Which of the following are true?