Distribution Curves

Question 1

Define normal distribution

Answer 1

-Type of distrubution where the mean,median and mode are equal
(Bell curve)

-it is a precited distrubition when considering an equally-likely set of results.

Question 2

Describe the features of a normal distribution

Answer 2

-classic bell shaped curve
-the mean,median and mode are all in the axact mid point
-the distribution is symmetrical around the mid point

Question 3

Define a positively skewed distrubution

Answer 3

-a type of skewed distrubution where the mode is less than the mean

Question 4

Describe the features of a positively skewed distrubution(right skewed=right foot)

Answer 4

-Top of hill is mode-down slope-median-mean.
-most scores tend to be towards the low end of the score range.
-The few extreme high scores has a strong effect on the mean which is always higher than the median and mode in a PS.

Question 5

Describe the features of a negative skewed distrubution (left skewness=left foot)

Answer 5

-Top of hill is mode-median-mean
-most scores tend to be towards the high end of the score range
-the mean is lower than the median and mode in a NS.

Question 6

Define a negatively skewed distrubution

Answer 6

-A type of skewed distrubution where the mode is greater than the mean