Questions from Essentials of Statistics

Q: We considered two hypothetical examples to explain the logic behind one-

We considered two hypothetical examples to explain the logic behind one-way ANOVA. Now, you are to further examine those examples. a. Perform a one-way ANOVA on the data and compare your conclusion to...

Q: In the article “Using EDE, ANOVA and Regression to Optimize

In the article “Using EDE, ANOVA and Regression to Optimize Some Microbiology Data” (Journal of Statistics Education, Vol. 12, No. 2, online), N. Binnie analyzed bacteria culture data collected by G....

Q: Permeation sampling is a method of sampling air in buildings for pollutants

Permeation sampling is a method of sampling air in buildings for pollutants. It can be used over a long period of time and is not affected by humidity, air currents, or temperature. In the paper “Cali...

Q: Consumer Reports publishes reviews and comparisons of products based on results from

Consumer Reports publishes reviews and comparisons of products based on results from its laboratory. Data from their website gave the following table for battery lives, in hours, for samples of laptop...

Q: In the publication “How Often Do Fishes ‘Run on Empty’

In the publication “How Often Do Fishes ‘Run on Empty’?” (Ecology, Vol. 83, No 8, pp. 2145–2151), D. Arrington et al. examined almost 37,000 fish of 254 species from the waters of Africa, South and Ce...

Q: The U.S. Census Bureau collects data on monthly rents

The U.S. Census Bureau collects data on monthly rents of newly completed apartments and publishes the results in Current Housing Reports. Independent random samples of newly completed apartments in th...

Q: The U.S. Geological Survey, in cooperation with the

The U.S. Geological Survey, in cooperation with the Florida Department of Environmental Protection, investigated the effects of waste disposal practices on ground water quality at five poultry farms i...

Q: Rock Sparrows breeding in northern Italy are the subject of a long

Rock Sparrows breeding in northern Italy are the subject of a long-term ecology and conservation study due to their wide variety of breeding patterns. Both males and females have a yellow patch on the...

Q: Explain the difference between a. frequency and relative frequency.

Explain the difference between a. frequency and relative frequency. b. percentage and relative frequency.

Q: In a study by J. Zeng et al., three materials

In a study by J. Zeng et al., three materials for making artificial teeth—Endura, Duradent, and Duracross—were tested for wear. Their results were published as the paper “In Vitro Wear Resistance of T...