Applied Stats HW Chapter 3 Quiz
The mean cannot be meaningfully calculated for a nominal variable such as gender. True False
True
The measures of central tendency one can use is determined by the variable's level of measurement. True False
True
The median is defined as the middlemost point in a distribution True False
True
Which measure of central tendency is most appropriate for a skewed distribution? A. mode B. mean C. the median D. B and C
median
In a bimodial distribution of scores, central tendency is best measured by: A. median B. mode C. all of the possible answers D. mean
mode
The mode is the score that occurs most frequently in a distribution A. mean B. median C. mode D. deviation
mode
A distribution with a Mean= 25, Median= 22.5 and Mode=20 is said to be. A. negatively skewed B. bimodial C. symmetrical D. positively skewed
positively skewed
Which is not a measure of central tendency? A. mean B. variance C. median D. mode
variance
# of robberies that occur in jurisdiction over 10 consecutive nights: 10, 12, 19, 5, 8, 6, 1, 13, 4, 7. The sum of all deviations from the mean is equal to A. median B. mode C. zero D. the mean
zero
# of robberies 10 consecutive nights: 10, 12, 19, 5, 8, 6, 13, 1, 4, 7. What is the median? A. 7.5 B. 7 C. 15 D. 8
7.5
The following values represent the number of robberies that occur in a jurisdiction over 10 consecutive nights: 10, 12, 19,5 ,6,8, 1, 13, 4, 7. What is the mean? A. 7.72 B. 6.82 C. 9 D. 8.5
8.5
The mode can be applied to any set of data at the nominal, ordinal, or interval level of measurement. True False
True
retirement age of 9 police officers: 39, 41, 44, 50, 54, 56, 56, 56, 61. What is the mean? A. 58 B. 50.78 C. 52.35 D. 49
50.78
39, 41, 44, 50, 54, 56, 56, 56, 61. What is the median? A. 54 B. 3 C. 5 D. 6.5
54
39, 41, 44, 50, 54, 56, 56, 56, 61. What is the mode? A. no mode B. 56 C. 3 D. 61
56
A distribution can only have one mode True False
False
the median is used for variables measured at the nominal level True False
False
Which measure of central tendency can be applied to nominal data? A. mean B. median C. A and B D. mode
Mode
As a measure of central tendency: The mean A. can often be used for more advanced statistical operations B. will always be a whole number C. is applicable to all levels of measurement D. is unaffected by extreme scores
can often be used for more advanced statistical operations.
The Greek Symbol Σ represents the A. sum B. mode C. median D. mode
sum
A distribution with an equal mean, median, and mode is said to be: A. negatively skewed B. positively skewed C. bimodial D. symmetrical
symmetrical
Deviation refers to: a) the distance of any score from the mean. b) the number of scores not equal to the mean. c) the number of scores equal to the mean. d) none of these above.
the distance of any scores from the mean
The median of a distribution is: A. the middlemost point B. the most extreme point C. none of the provided answers D. the most frequent value that occurs
the middlemost point
In a negatively skewed distribution: A. the median is larger than the mode B. the mean is larger than the mode C. the mode is larger than the mean D. the mean is larger than the median
the mode is larger than the mean
In a positively skewed distribution A. the mean is smaller than the mode B. the mean is smaller than the median C. the median is smaller than the mode D. the mode is smaller than the mean
the mode is smaller than the mean