AP PSYCHOLOGY

Detailed explanation-1: -If the median is to the right of the mean, then it is negatively skewed. And if the mean is to the right of median, then it is positively skewed.

Detailed explanation-2: -When the scores are mostly low, a curve is said to be positively skewed. This is because the majority of the scores fall in the lower part of the distribution. With few high scores causing little or no tail on the left and then a longer tail on the left. It is not symmetrical.

Detailed explanation-3: -One example of positively skewed data could be a typical income data set. If you draw a curve of a sample population’s income on a graph, the curve is likely to be skewed to the right, or positively skewed. This would occur if most people have average incomes, and a smaller number of people have high incomes.

Detailed explanation-4: -A positively skewed distribution has a longer tail to the right: A negatively skewed distribution has a longer tail to the left: A distribution with no skew (e.g. a normal distribution) is symmetrical: In a perfectly symmetrical, non-skewed, distribution the mean, median and mode are equal.