A Sample of Five Flooring Installers, Each Carrying Three Types

question 58

Multiple Choice

A sample of five flooring installers, each carrying three types of flooring, was taken and the price per square metre (to the nearest cent) was recorded for each type of flooring, as shown in the table below. (i) The range for laminate flooring is 0 or none.
(ii. The mean deviation for laminate flooring is 0.
(iii) The range for nylon carpet is $0.12 or 12 cents.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements, but not (i).
• E) (i), (ii) and (iii) are all false statements.

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Definitions:

Mean Salary

The average salary calculated by summing all salaries and dividing by the number of salaries.

Population Standard Deviation

A measure of the spread of a set of values in a population, giving insight into the variability within the entire population.

Sample Size

The number of observations or elements selected from a population to be included in a sample.

Upper Limit

The highest value in a range or set of data, often referring to the maximum point in an interval or boundary in statistical analysis.