Which of the following is an example of a continuous variable?
Tons of concrete to complete a parking garage
Number of students in a statistics class
Zip codes of shoppers
Rankings of baseball teams in a league
The incomes of 50 loan applicants are obtained. Which level of measurement is income?
The members of each basketball team wear numbers on their jerseys. What scale of measurement
are these numbers considered?
The reported unemployment is 5.5% of the population. What measurement scale is used to measure
Interval or ratio
The Nielsen Ratings break down the number of people watching a particular television show by
age. What level of measurement is age?
An example of a qualitative variable is _________________.
Number of children in a family
Weight of a person
Color of ink in a pen
Miles between oil changes
Two thousand two hundred frequent business travelers are asked which midwestern city they prefer:
Indianapolis, Saint Louis, Chicago, or Milwaukee. 112 liked Indianapolis best, 452 liked Saint Louis, 1295
liked Chicago, and the remainder preferred Milwaukee. Develop a frequency table and a relative frequency
table to summarize this information. (Round relative frequency to 3 decimal places.)
The Cambridge Power and Light Company selected a random sample of 20 residential customers.
Following are the amounts, to the nearest dollar, the customers were charged for electrical service last
Consider these five values a population: 6, 3, 7, 3, and 7.
An investor buys 100 shares of AT&T stock and records its price change daily. Which concept of probability
would you use to estimate the probability of an individual event?
Probability of an individual event