practice questions chpt 12 NEW

# practice questions chpt 12 NEW - Practice Questions Chapter...

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Practice Questions Chapter 12 and 13 1. ___________ statistics are used to describe data, whereas __________ statistics are used to draw inferences about the population from which the sample was drawn. A) Inferential; descriptive B) Descriptive; inferential C) Qualitative; quantitative D) Quantitative; qualitative I chose B. because descriptive statistics are used to describe data whereas inferential statistics are used to draw inferences about a population as a whole from where the sample was drawn. 2. A teacher writes the results of a test on the board: 7 students received A's, 10 students received B's, 18 students received C's, 4 students received D's, and 1 student received an F. In statistical terms, this is a 3. When a line graph is employed to represent the number of subjects who received each possible score on a variable, this graph is called a frequency _____. 4. To graph frequency distributions, categorical variables are often displayed using _________, while quantitative variables are often displayed using __________. 5. Which one of the following would be an appropriate measure of central tendency to summarize ordinal data? A) Mean B) Median C) Correlation D) Any of these would be appropriate. I chose B. because the median is appropriate when scores are on an ordinal scale because it takes

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into account only the rank order of the scores. 6. A teacher writes the results of a test on the board: 7 students received A’s, 10 students received B’s, 18 students received C’s, 4 students received D’s, and 1 student received an F. The grade of C would represent which measure of central tendency? A) Mean B) Mode C) Median D) Standard deviation I chose B. because the mode is the most frequent score, and 18 students that received a c is the largest number among the students.
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