Straighterline Business Statistics Quiz
1|Questions solved 100% Correct/Verified
Solutions
In a company, the standard deviation of the ages of female employees is six
years and the standard deviation of the ages of male employees is ten years.
These statistics indicate that the dispersion of age is greater for females than for
males. - ANSWER False
The final rankings of the top 20 NCAA college basketball teams are an example
of which level of measurement? - ANSWER Ordinal
A marketing research agency was hired to test a new DVD player. Consumers
rated it outstanding, very good, fair or poor. The level of measurement for
this experiment is ordinal. - ANSWER True
The weights of a sample of crates ready for shipment to Moscow, Russia are (in
kilograms): 103, 97, 101, 106 and 103. What is the mean deviation? - ANSWER 2.4
kg
MD = (∑|X-X |)/n̅
According to the Empirical Rule, the middle 95 percent of the wires tested
between approximately what two values? - ANSWER "About 95% of the
observations will lie within +/- 2 standard deviations of the mean"
1|Questions solved 100% Correct/Verified
Solutions
In a company, the standard deviation of the ages of female employees is six
years and the standard deviation of the ages of male employees is ten years.
These statistics indicate that the dispersion of age is greater for females than for
males. - ANSWER False
The final rankings of the top 20 NCAA college basketball teams are an example
of which level of measurement? - ANSWER Ordinal
A marketing research agency was hired to test a new DVD player. Consumers
rated it outstanding, very good, fair or poor. The level of measurement for
this experiment is ordinal. - ANSWER True
The weights of a sample of crates ready for shipment to Moscow, Russia are (in
kilograms): 103, 97, 101, 106 and 103. What is the mean deviation? - ANSWER 2.4
kg
MD = (∑|X-X |)/n̅
According to the Empirical Rule, the middle 95 percent of the wires tested
between approximately what two values? - ANSWER "About 95% of the
observations will lie within +/- 2 standard deviations of the mean"
