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Which is NOT a property of a normal distribution? A - Discrete X variables B -...

  1. Which is NOT a property of a normal distribution?

    A

    - Discrete X variables
    B

    - Symmetrical distribution
    C

    - Bell-shaped distribution
    D

    -Approximately 68% of the scores fall between + and -1 standard deviation from the mean

  2. If the mean of a distribution is 84, the mode is 52 and the median is 58, the distribution is:

    A

    Positively skewed
    B

    Negatively skewed
    C

    Symmetric
    D

    Cannot tell from this information

  3. A few people do very poorly on a particular measure. What will be the effect on the distribution of scores?

    A

    Positive skew
    B

    Negative skew
    C

    Bimodal
    D

    Platykurtic

  4. What effect will increasing the number of scores near the mean have on kurtosis?

    A

    The distribution will be more platykurtic.
    B

    The distribution will become more skewed.
    C

    The distribution will become more symmetrical.
    D

    The distribution will be less platykurtic.

5. We have the following intelligence scores: 95, 100, 100, 100, 100, 105, 105.

What is the percentage of scores in the population that are above 100?

7. We have the following intelligence scores: 95, 100, 100, 100, 100, 105, 105.

If these data represented the population, what could we conclude about kurtosis?

math   Statistics-And-Probability   
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