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Tables and Figures in Statistics MCQ

1. Which term best describes this data set? 2, 3, 3, 3, 3, 3, 3, 4, 5, 6, 6, 7, 8, 8, 8, 8, 9

Unimodal

Bimodal

Symmetrical

Flat

Answer

Correct Answer: Bimodal

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2. Which term best describes this data set? 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6

Unimodal

Bimodal

Flat

Normally distributed

Answer

Correct Answer: Flat

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3. The term “normal distribution” places a value judgement on the variable.

True

False

Answer

Correct Answer: False

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4. A normally distributed variable is a bell-shaped distribution.

True

False

Answer

Correct Answer: True

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5. An instructor gives an exam on which scores can range from 0% to 100% but tells the class the number of students who scored between 0–33%, 34–66%, and 67–100%. This is most analogous (most similar) to ______.

A frequency distribution table

A grouped frequency distribution table

A pie chart

A histogram

Answer

Correct Answer: A grouped frequency distribution table

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6. Variables measured at the nominal level are typically displayed using frequency polygons.

True

False

Answer

Correct Answer: False

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7. A frequency distribution table may be used to identify outliers.

True

False

Answer

Correct Answer: True

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8. Researchers examine data before analyzing it in order to ______.

Draw conclusions

Discard errors

Gain initial sense of the data

Eliminate outliers

Answer

Correct Answer: Gain initial sense of the data

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9. Variables measured at the interval and ratio level are typically displayed using histograms.

True

False

Answer

Correct Answer: True

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10. If a group of scores is normally distributed the distribution would be ______.

Unimodal

Asymmetrical

Positively skewed

A peaked distribution

Answer

Correct Answer: Unimodal

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11. If data were summarized in a grouped frequency distribution table, based only on the information in the table, which of the following would you be able to calculate or determine?

Mean of scores

Mode of scores

Number of scores in an interval

Exact score of an individual participant

Answer

Correct Answer: Number of scores in an interval

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12. In a grouped frequency distribution table, the intervals should be of equal size.

True

False

Answer

Correct Answer: True

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13. Which term best describes this data set? 4, 4, 4, 4, 5, 5, 6, 6, 7, 7, 8, 9

Negatively skewed

Positively skewed

Symmetrical

Normally distributed

Answer

Correct Answer: Positively skewed

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14. Which term best describes this data? 2, 2, 3, 4, 4, 5, 6, 7, 7, 7, 7, 7, 8, 8, 9, 10

Unimodal

Bimodal

Multimodal

Symmetrical

Answer

Correct Answer: Unimodal

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15. An outlier is ______.

The highest score in a data set

The lowest score in a data set

An extreme score that lies outside of the range of the majority of scores in a data set

A response of someone presumed to be fibbing

Answer

Correct Answer: An extreme score that lies outside of the range of the majority of scores in a data set

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16. Normally distributed variable is considered to be unimodal, symmetric, and neither peaked nor flat.

True

False

Answer

Correct Answer: True

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17. _____ Distribution where the data are spread evenly across the values of a variable.

Flat

Peak

Constant

None of these

Answer

Correct Answer: Flat

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18. ____ Distribution where much of the data are in a small number of values of a variable.

Flat

Peak

Constant

None of these

Answer

Correct Answer: Peak

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19. The amount of differences in a distribution of data for a variable is variability

True

False

Answer

Correct Answer: True

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20. Negatively skewed Distribution in which the higher frequencies are at the ____ end of the distribution, with the tail on the lower (left) end of the distribution.

Upper

Lower

Higher

Lower

Answer

Correct Answer: Upper

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21. Positively skewed Distribution in which the higher frequencies are at the ____ end of the distribution, with the tail on the upper (right) end of the distribution

Upper

Lower

Higher

Lower

Answer

Correct Answer: Lower

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22. ASymmetric Distribution in which the frequencies change in a different manner moving away in both directions from the most frequently occurring values.

True

False

Answer

Correct Answer: True

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23. Distribution in which the frequencies change in a similar manner moving away in both directions from the most frequently occurring values is symmetric distribution

True

False

Answer

Correct Answer: True

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24. How the frequencies of values of a variable change in relation to the most common or frequently occurring values is called

Symmetry

Frequency

Asymmetry

All of these

Answer

Correct Answer: Symmetry

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25. _____ Distribution where more than two values have the greatest frequency.

Unimodal

Bimodal

Multimodel

All of these

Answer

Correct Answer: Multimodel

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26. _____ Distribution in which two values clearly distinct from each other have the greatest frequency.

Unimodal

Bimodal

Multimodel

All of these

Answer

Correct Answer: Bimodal

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27. ____ Distribution where one value occurs with the greatest frequency.

Unimodal

Bimodal

Multimodel

All of these

Answer

Correct Answer: Unimodal

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28. Value or values of a variable that have the ____frequency in a set of data is called modality

Lowest

Highest

Zero

None of these

Answer

Correct Answer: Highest

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29. Frequency polygon is ____ graph that uses connected data points to represent the frequencies of values of a variable.

Bar

Pie

Line

Circle

Answer

Correct Answer: Line

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30. Figure that uses connected bars to represent the frequencies of values of a variable is ____

Histogram

Biogram

Chartgram

All of these

Answer

Correct Answer: Histogram

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31. _____ chart uses a circle divided into proportions to represent the percentage of the sample corresponding to each value of a variable.

Bar

Pie

Line

Circle

Answer

Correct Answer: Pie

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32. ____ chart uses bars to represent the frequency or percentage of a sample corresponding to each value of a variable.

Bar

Pie

Line

Circle

Answer

Correct Answer: Bar

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33. Percentage of a sample at or below a particular value of a variable is cumulative frequency

True

False

Answer

Correct Answer: True

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34. Largest value of a variable in a particular interval of values is known as

Real limits

Real lower limit

Real upper limit

All of these

Answer

Correct Answer: Real upper limit

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35. Smallest value of a variable in a particular interval of values is known as

Real limits

Real lower limit

Real upper limit

All of these

Answer

Correct Answer: Real lower limit

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36. Values of a variable located halfway between the top of one interval and the bottom of the next interval is known as

Real limits

Real lower limit

Real upper limit

All of these

Answer

Correct Answer: Real limits

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37. Grouped ____ distribution table that groups values of a variable into intervals and provides the frequency and percentage within each interval.

Outlier

Frequency

Observation

None of these

Answer

Correct Answer: Frequency

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38. Number of participants in a sample corresponding to a value of a variable is called

Outlier

Frequency

Observation

None of these

Answer

Correct Answer: Frequency

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39. ____ distribution table summarizing the number and percentage of participants for the different values of a variable.

Outlier

Frequency

Observation

None of these

Answer

Correct Answer: Frequency

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40. Rare, extreme score that lies outside of the range of the majority of scores in a set of data is known as

Outlier

Frequency

Observation

None of these

Answer

Correct Answer: Outlier

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