The normal curve represents a distribution where the and

The normal curve represents a distribution where the __________, ___________, and ___________ are equal to each other.

Range, standard deviation and variance

Mean, median and standard deviation

Mode, median and standard deviation

Mean, median and mode

A z-score tells you:

how far above or below the mean a score lies.

the original raw score on which it is based.

if the distribution it comes from is normal.

how far above or below the mean a score lies in standard deviation units

Solution

1) Mean, median and mode is equal for the normal distribution

2)

If a Z-Score….

ü      Has a value of 0, it is equal to the group mean.

ü      Is positive, it is above the group mean.

ü      Is negative, it is below the group mean.

ü      Is equal to +1, it is 1 Standard Deviation above the mean.

ü      Is equal to +2, it is 2 Standard Deviations above the mean.

ü      Is equal to -1, it is 1 Standard Deviation below the mean.

ü      Is equal to -2, it is 2 Standard Deviations below the mean.

Answer : how far above or below the mean a score lies in standard deviation units