A sample of 25 undergraduates reported the following dollar

A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:

Find the mean, median and mode of this information. (Round your answers to 2 decimal places.)

What are the range and standard deviation? (Round your answers to 2 decimal places.)

Use the Empirical Rule to establish an interval which includes about 95 percent of the observations. (Round your answers to 2 decimal places.)

Solution

a.

Mean=734.88

Median=743.00

Mode=716

b.

Range=94.00

Standard Deviation= 26.66

c.

Interval from $723.88 to $745.88