Stats Essay

723 Words Jan 14th, 2015 3 Pages
Tutorial 1
Hilda Liyana (BA1401)
Introduction to Statistics

Prepare answers for the following questions to be discussed in class:
Distinguish Between a Population and a Sample
1. Write the word or phrase that best completes each statement or answers the question.
Identify the population and the sample.
a. A survey of 1378 American households found that 27% of the households own a computer.
Population – responses of all American households.
Sample – responses of 1378 American Households in the survey. The sample is a subset of the responses of all American Households.
b. When 1094 American households were surveyed, it was found that 67% of them owned two cars.
Population – responses of all American households.
Sample –
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Identify whether the statement describes inferential statistics or descriptive statistics.
a. The average age of the students in a statistics class is 19 years.
Inferential Statistics
b. The chances of winning the California Lottery are one chance in twenty-two million.
Inferential Statistics
c. There is a relationship between smoking cigarettes and getting emphysema.
Descriptive Statistics
d. From past figures, it is predicted that 19% of the registered voters in California will vote in the June primary.
Descriptive Statistics

4. Determine whether the data are qualitative or quantitative.
a. the colors of automobiles on a used car lot
Qualitative
b. the number of complaint letters received by the United States Postal Service in a given day
Quantitative
c. the number of seats in a movie theater
Quantitative
d. the numbers on the shirts of a girlʹs soccer team
Quantitative

5. The following questions were asked to a class of 36 students in a survey. Indicate whether they are qualitative or quantitative.
a. Religion
Qualitative
b. Gender
Qualitative
c. Date of birth
Quantitative
d. Hobbies
Qualitative
e. Amount of pocket money
Quantitative
f. Body temperature
Quantitative
g. Favourite food
Qualitative

Classify Data with Respect to the Four Levels of Measurement
6. Identify the data setʹs level of measurement (i.e. ratio, ordinal, interval,…

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