# Tykrane

Popular questions and responses by Tykrane
1. ## Statistics

A purchasing agent for a trucking company is shopping for replacement tires for their trucks from two suppliers. The suppliers' prices are the same. However, Supplier A's tires have an average life of 60,000 miles with a standard deviation of 10,000 miles.

What type of data is the number of gallons of gasoline pumped by a filling station during a day? A. qualitative B. continuous C. attribute D. discrete E. none of the above

What type of data is the projected return on an investment? A. qualitative B. continuous C. attribute D. discrete E. none of the above

4. ## Statistics

A disadvantage of using arithmetic mean to summarize a set of data is? A. the arithmetic mean sometimes has two values. B. it can used for interval and ratio data. C. it is always different from the median. D. it can be biased by one or two extremely small

The monthly salaries of a sample of 100 employees were rounded to the nearest ten dollars. They ranged from a low of \$1,040 to a high of \$1,720. If we want to condense the data into seven classes, what is the most convenient class interval? A. \$50 B. \$100

6. ## Statistics

The relative frequency for a class is computed as: A. class width divided by class interval. B. class midpoint divided by the class frequency. C. class frequency divided by the interval. D. class frequency divided by the total frequency>

7. ## Statistics

A purchasing agent for a trucking company is shopping for replacement tires for their trucks from two suppliers. The suppliers' prices are the same. However, Supplier A's tires have an average life of 60,000 miles with a standard deviation of 10,000 miles.

8. ## Statistics

When a class interval is expressed as: 100 up to 200, A. observations with values of 100 are excluded from the class frequency. B. observations with values of 200 are included in the class frequency. C. observation with values of 200 are excluded from the

9. ## Statistics

Which one of the following is NOT an example of discrete data? A. number of households watching the Home Improvement. B. number of employees reporting in sick. C. number of miles between New York City and Chicago. D. number of members of the Dobbs Ferry-

10. ## Math

What is the percentage increase from 132 million to 153.1 million?

11. ## Statistics

What disadvantage(s) are there of the mean deviation? A. based on only two observation B.can be distorted by a large mean C. not in the same units as the original data. D.has no disadvantage E. none of the above.

12. ## Statistics

If we test a small number of light bulbs from a large group, the small group is called a: A. breakout session B. Population C. group. D. Sample E. none of the above

A sample of the personnel files of eight male employees revealed that, during a six month period, they lost the following number of days due to illness: 2, 0, 6, 3, 10, 4, 1, and 2. Caluculate the mean deviation.

When a class interval is expressed as: 100 up to 200, A. observations with values of 100 are excluded from the class frequency. B. observations with values of 200 are included in the class frequency. C. observation with values of 200 are excluded from the

In a simple line chart, where is time plotted? A. on the X-axis B. on the Y-axis C. on either axis D. never plotted

In a frequency distribution, what is the number of observations in a class called? A. class midpoint B. class interval C. class array D. class frequency E. none of the above

If we test a small number of light bulbs from a large group, the small group is called a: A. breakout session B. population C. group D. sample E. none of the above