1. The ______ is the most appropriate measure of central tendency for a nominal variable.
Answer
Correct Answer:
Mode
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2. The distribution that is most likely to be normal is a ______ one.
Answer
Correct Answer:
Mesokurtic
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3. Which of the following is most appropriate for graphing nominal data?
Answer
Correct Answer:
Bar graph
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4. If you reported that participants in your study were aged between 18 and 64, you would be reporting the ______.
Answer
Correct Answer:
Observed minimum and maximum
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5. If you wanted to know what proportion of your sample consisted of left-handed people, you would be wondering about the ______.
Answer
Correct Answer:
Percentage
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6. The point in a distribution at which 50% of the scores are below and 50% of the scores are above is known as the ______.
Answer
Correct Answer:
Median
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7. If you wanted to summarize the weight of your participants, and you found that weight was normally distributed in your sample, at minimum you should ______.
Answer
Correct Answer:
Report the mean and standard deviation for weight
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8. Which of the following is not a characteristic of a normal distribution?
Answer
Correct Answer:
It is shaped like an upside-down bell or U shape.
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9. When an interval or ratio variable is skewed, what is the appropriate measure of central tendency to report?
Answer
Correct Answer:
Median
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10. When scores cluster at one end of the distribution, it is said to be ______.
Answer
Correct Answer:
Skewed
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11. A standardized score based on the ________ of the distribution.
Answer
Correct Answer:
Standard deviation
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12. The average of the squared difference between the ______ and scores in a distribution, or the stan-dard deviation squared is called variance
Answer
Correct Answer:
Mean
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13. The degree to which scores differ from each other in the sample is called variability
Answer
Correct Answer:
True
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14. A non-normal distribution in which all scores or ratings have the same frequency is called
Answer
Correct Answer:
Uniform distribution
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15. A single number that summarizes the degree to which scores differ from the ______ is called standard deviation
Answer
Correct Answer:
Mean
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16. A number that indicates the degree of skewness in a distribution is called
Answer
Correct Answer:
Skewness statistic
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17. A non-normal distribution that is asymmetrical, with scores clustering on one side of the distribution and a long tail on the other side is known as
Answer
Correct Answer:
Skewed distribution
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18. The _______ between the observed maximum and minimum scores.
Answer
Correct Answer:
Distance
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19. Possible minimum and maximum scores is the lowest and highest scores possible for the measurement instrument.
Answer
Correct Answer:
True
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20. One or a few ________ skew the dis-tribution in the positive direction, but most of the scores cluster on the negative end of the scale.
Answer
Correct Answer:
Positive scores
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21. A normal distribution that is rela-tively spread out and flat.
Answer
Correct Answer:
Platykurtic curve
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22. The percentage of the distribution that scored below a specific score is known as
Answer
Correct Answer:
Percentile
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23. The proportion of a score within the sample is known as
Answer
Correct Answer:
Percentage
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24. Responses or observations that deviate greatly from the rest of the ____ is called outliers
Answer
Correct Answer:
Data
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25. The lowest and highest scores on a measure that are obtained in the sample is called observed minimum and maximum scores
Answer
Correct Answer:
True
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26. The process of categorizing and numbering information for quantitative analyses is called numerical coding
Answer
Correct Answer:
True
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27. Symmetrical distribution in which scores cluster around the middle and then taper off at the ends is called normal distribution
Answer
Correct Answer:
True
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28. Negative skew is one or a few _________ skew the distribution in the negative direction, but most of the scores cluster on the positive end of the scale
Answer
Correct Answer:
Negative scores
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29. The most frequent score in a distribution is called mode
Answer
Correct Answer:
Mode
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30. A normal distribution with a moder-ate or middle peak
Answer
Correct Answer:
Mesokurtic curve
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31. The score that cuts a distribution in half
Answer
Correct Answer:
Median
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32. The arithmetic average is known as
Answer
Correct Answer:
Mean
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33. Leptokurtic curve is a normal distribution with most of the scores in the middle and a sharp peak
Answer
Correct Answer:
True
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34. The degree of the peak of a normal distribution is called kurtosis
Answer
Correct Answer:
True
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35. _______ is used to graph used to display interval or ratio data in which the frequency of scores is depicted on the y-axis and the interval ratings or ratio scores are depicted on the x-axis. Adjacent bars represent the frequency of each rat-ing or score.
Answer
Correct Answer:
Histogram
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36. Frequency polygon is graph used to display interval or ratio data in which the frequency of scores is depicted on the y-axis and the scores are depicted on the x-axis. Points represent the frequency of each score. The points are con-nected with ______ that begin and end on the x-axis.
Answer
Correct Answer:
Straight lines
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37. A count of how many times a score appears in the sample is called
Answer
Correct Answer:
Frequency
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38. A type of _______ analysis used to summarize the characteristics of a sample.
Answer
Correct Answer:
Qualitative
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39. The proportion of a score that falls within a specified interval is known as
Answer
Correct Answer:
Cumulative percentage
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40. The process of categorizing information is known as
Answer
Correct Answer:
Coding
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41. A ______ score that summarizes the center of the distribution is called central tendency
Answer
Correct Answer:
Single
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42. A non-normal distribution that has _____ peaks is called bimodal distribution
Answer
Correct Answer:
Two
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43. Graph used to display nominal or ordinal data in which the frequency of scores is depicted on the y-axis and the categories for nominal data or ranks for ordinal data are depicted on the x-axis. Nonadjacent bars repre-sent the frequency of each category or rank is called.
Answer
Correct Answer:
Bar Graph
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Research Methods (Statistics And Applications) MCQs | Topic-wise
