The following are incorrect about the normal distribution ex

The following are incorrect about the normal distribution except (CHOOSE ALL THE RELEVANT OPTIONS) *

2 points

The mean and variance may be negative

It has an oblong shape

The curve is symmetric about the mean

It is a bimodal distribution

The standard normal distribution has unit variance

The mean, median and mode coincide

The mean generally is greater than the mode

Solution

From given statements we mark incorrect and correct about the normal distribution.

1) The mean and variance may be negative - incorrect

2) It has an oblong shape - incorrect

3) The curve is symmetric about the mean - correct

4) It is a bimodal distribution - incorrect

5) The standard normal distribution has unit variance - correct

6) The mean, median and mode coincide - correct

7) The mean generally is greater than the mode - incorrect