Matric No.: ________________ Matric No.: _____________
A. Circle the correct answers. (9 marks)
1. | A ____________ is a characteristic or attribute of a subject that can assume different values? | A) | datum | B) | variable | C) | exponent | D) | sample |
2. | If a weather center monitors and calculates the average number of tornadoes that pass through Topeka, Kansas each year, what type of variable would they be investigating? | A) | random variable | B) | controlled variable | C) | isolated variable | D) | hypothesis variable |
3. | Which of the following correctly describes the relationship between a sample and a population? | A) | A sample is a group of populations that are subject to observation. | B) | A population is a group of samples that may or may not be included in a study. | C) | A sample is a group of subjects selected from a population to be studied. | D) | A population and a sample are not related. |
4. | Based on her electric bills from last year, Mrs. Smith expects she will be paying $75/month this year. This is an example of descriptive statistics. | A) | True | B) | False |
5. | Which branch of statistics would employ probability to predict how many miles one should be able to drive a 2000 Toyota Celica during its lifetime? | A) | time series statistics | B) | descriptive statistics | C) | inferential statistics | D) | differential statistics |
6. | In which branch of statistics would a researcher acquire twenty-five 2000 Toyota Celicas, drive them until they had a major mechanical failure, record the final mileage, and then write a report for Car and Driver? | A) | predictive statistics | B) | descriptive statistics | C) | inferential statistics | D) | differential statistics |
7. | What level of measurement allows for the ranking of data, a precise difference between units of measure, and