Question

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

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
Math   Statistics-And-Probability   
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Answer #1

Ans. The correct option is A. i.e., it does not defined for discrete X variables.

Properties of a Normal Distribution:

  • It is Bell shaped , unimodal (having a single mode), symmetric around the mean.
  • It is defined by two parameters: mean , and standard deviation .
  • It only for continuous variables.
  • And it follows a 68-95-99.7 rule. i.e., within (+1 and -1 standard deviation 68% data falls in this range and -2 and +2 standard deviation 95% data falls in this range).
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