Centigrade and fahrenheit temperature scales

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Reference no: EM131568001

1. What level of measurement are the Centigrade and Fahrenheit temperature scales?

Nominal

Ordinal

Interval

Ratio

2. What is the relationship between the variance and the standard deviation?

Variance is the square root of the standard deviation

Variance is the square of the standard deviation

Variance is twice the standard deviation

No constant relationship between the variance and the standard deviation

3. The U.S. Department of Education reported that for the past seven years 4,033, 5,652, 6,407, 7,201, 8,719, 11,154, and 15,121 people received bachelor's degrees in computer and information sciences. What is the annual arithmetic mean number of degrees awarded?

About 12,240

About 8,327

About 6,217

About 15,962

4. 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. Supplier B's tires have an average life of 60,000 miles with a standard deviation of 2,000 miles.

Which of the following statements is true?

The two distributions of tire life are the same

On average, Supplier A's tires have a longer life then Supplier B's tires

The life of Supplier B's tire is more predictable than the life of Supplier A's tires

The dispersion of Supplier A's tire life is less than the dispersion of Supplier B's tire life

Reference no: EM131568001

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