Purchase Solution

Histograms and estimates from those distributions

Not what you're looking for?

Each month the American Automobile Association (AAA) generates a report on gasoline prices that it distributes to newspapers throughout the state. On February 17, 1999, AAA called a random sample of 51 stations to determine that day's price of unleaded gasoline.

The resulting data (in dollars) is shown as follows: 1.07 1.31 1.18 1.01 1.23 1.09 1.29 1.10 1.16 1.08 0.96 1.66 1.21 1.09 1.02 1.04 1.01 1.03 1.09 1.11 1.11 1.17 1.04 1.09 1.05 0.96 1.32 1.09 1.26 1.11 1.03 1.20 1.21 1.05 1.10 1.04 0.97 1.21 1.07 1.17 0.98 1.10 1.04 1.03 1.12 1.10 1.03 1.18 1.11 1.09 1.06 Create a data array with the gasoline price data. Create two histograms for this data set using 5 classes for the first and 15 classes for the second. Estimate the number of prices that are at least \$1.15 using each of the preceding histograms. A local radio station has reported that 30% of the gas stations are charging \$1.15 or more for gasoline. Use one of the histograms you have produced to respond to this report. Which histogram did you use? Why?

Solution Summary

Each month the American Automobile Association (AAA) generates a report on gasoline prices that it distributes to newspapers throughout the state. On February 17, 1999, AAA called a random sample of 51 stations to determine that day's price of unleaded gasoline.

The resulting data (in dollars) is shown as follows: 1.07 1.31 1.18 1.01 1.23 1.09 1.29 1.10 1.16 1.08 0.96 1.66 1.21 1.09 1.02 1.04 1.01 1.03 1.09 1.11 1.11 1.17 1.04 1.09 1.05 0.96 1.32 1.09 1.26 1.11 1.03 1.20 1.21 1.05 1.10 1.04 0.97 1.21 1.07 1.17 0.98 1.10 1.04 1.03 1.12 1.10 1.03 1.18 1.11 1.09 1.06 Create a data array with the gasoline price data. Create two histograms for this data set using 5 classes for the first and 15 classes for the second. Estimate the number of prices that are at least \$1.15 using each of the preceding histograms. A local radio station has reported that 30% of the gas stations are charging \$1.15 or more for gasoline. Use one of the histograms you have produced to respond to this report. Which histogram did you use? Why?

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.