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Chapter 3 - Central Tendency
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Questions in this quiz (17)
1What is the mean for the following sample of scores?
Scores: 1, 2, 5, 4- A12
- B6
- C4
- D3
2A sample has a mean of M = 45. If one person with a score of X = 53 is removed from the sample, what effect will it have on the sample mean?
- AThe sample mean will increase.
- BThe sample mean will decrease.
- CThe sample mean will remain the same.
- DCannot be determined from the information given.
3One sample has n = 8 scores and M = 2. A second sample has n = 4 scores and M = 8. If the two samples are combined, then what is the mean for the combined sample?
- A3
- B4
- C5
- D6
4What is the mean for the population of scores shown in the frequency distribution table?
- A15/10 = 1.5
- B15/5 = 3.0
- C29/10 = 2.9
- D29/5 = 5.8
5After 5 points are added to every score in a distribution, the mean is calculated and found to be μ = 30. What was the value of the mean for the original distribution?
- A25
- B30
- C35
- DCannot be determined from the information given
6What is the median for the following set of scores:
Scores: 3, 4, 6, 8, 9, 10, 11- A7
- B7.5
- C8
- D8.5
7What is the median for the following set of scores:
Scores: 8, 10, 11, 12, 14, 15- A11
- B11.5
- C12
- D70/6 = 11.67
8For the sample shown in the frequency distribution table, what is the median?
- A3
- B3.5
- C4
- D15/2 = 7.5
9During the month of October, an instructor recorded the number of absences for each student in a class of n 5 20 and obtained the following distribution. What are the values for the mean, the median, and the mode for this distribution?
- AMean = 2.35, Median = 2.5, Mode = 3
- BMean = 2.5, Median = 3, Mode = 3
- CMean = 2.35, Median = 3, Mode = 7
- DMean = 2.5, Median = 2.5, Mode = 7
10What is the mode for the following set of n 5 8 scores?
Scores: 0, 1, 1, 2, 2, 2, 2, 3- A2
- B2.5
- C13/8 = 1.625
- D13
11For the sample shown in the frequency distribution table, what is the mode?
- A3
- B3.5
- C4
- D5
12A teacher gave a reading test to a class of 5th-grade students and computed the mean, median, and mode for the test scores. Which of the following statements cannot be an accurate description of the scores?
- AThe majority of the students had scores above the mean.
- BThe majority of the students had scores above the median.
- CThe majority of the students had scores above the mode.
- DAll of the other options are false statements.
13One item on a questionnaire asks, “How many siblings (brothers and sisters) did you have when you were a child?” A researcher computes the mean, the median, and the mode for a set of n 5 50 responses to this question. Which of the following statements accurately describes the measures of central tendency?
- ABecause the scores are all whole numbers, the mean will be a whole number,
- BBecause the scores are all whole numbers, the median will be a whole number.
- CBecause the scores are all whole numbers, the mode will be a whole number.
- DAll of the other options are correct descriptions.
14The value of one score in a distribution is changed from X = 20 to X = 30. Which measure(s) of central tendency is (are) certain to be changed?
- AThe mean
- BThe median
- CThe mean and the median
- DThe mode
15Which of the following is true for a symmetrical distribution?
- AThe mean, median, and mode are all equal
- BMean = Median
- CMean = Mode
- DMedian = Mode
16For a negatively skewed distribution with a mode of X = 25 and a median of 20, the mean is probably _____.
- AGreater than 25
- BLess than 20
- CBetween 20 and 25
- DCannot be determined from the information given
17A distribution is positively skewed. Which is the most probable order for the three measures of central tendency?
- AMean = 40, Median = 50, Mode = 60
- BMean = 60, Median = 50, Mode = 40
- CMean = 40, Median = 60, Mode = 50
- DMean = 50, Median = 50, Mode = 50
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- Description
- Year 1 Statistics I Quiz on Chapter 3 - Central Tendency, created by Eloise Brisson on 10/08/2022.
- Author
- Eloise Brisson
- Language
- English
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- History
- Created on 10 Aug 2022 · updated on 10 Aug 2022
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