Worksheet #1 STA 2023
Determine if the given value is a statistic or a parameter:
1) A sample of students is selected, and the average (mean) age is 20.7.
2) After checking computer records for every commercial movie made last year, the longest running time is found to be 187 minutes.
3) All the state governors are surveyed, and 30 of them are found to be Democrats.
4) Several Domino Sugar packets are randomly selected, and the average (mean) weight of the contents is 3.647 grams.
Determine whether the given values are from discrete or continuous variables:
5) A statistics professor counts 3 absent students.
6) A statistics professor finds that on the first test, the first paper is turned in 39.6 minutes after the test began.
7) In a survey of 1068 Americans, 673 state they own answering machines.
8) A manufacturer of rechargeable calculator batteries finds that one batch consists of 850 good batteries and 7 that are defective.
Determine which of the four levels of measurement (ratio, interval, ordinal, or nominal) is most appropriate:
9) Heights of women basketball players in the WNBA.
10) Ratings of superior, above average, average, below average, or poor for blind dates.
11) Social security numbers
12) The years in which new editions of your text book were published
13)
14) Zip codes
15) Consumer Reports magazine ratings of best buy, recommended, not recommended.
16) Distances traveled by commuter students.
17) The actual contents (in ounces) of cola in Coke cans labeled 12 ounces.
18) The number of errors made when a store scans 8000 different purchases.
19) The amount of tar (in milligrams) in a sample cigarette.
20) A movie critic’s classification of drama, comedy, adventure
21) IQ scores, where the score is the number of points scored on the IQ test.
22) The years in which democrats were elected president
23) My age in years