PKSC 4300: statistics in converting Exam
Define summary statistics: statistics that describe the POINT around which variation occurs
mean, median, mode
Define spread statistics: statistics that describe the grouping of the data
range, average deviation, standard deviation
What can affect the median?: it can be affected by a low or high mode
What can affect the mean?: the mean is skewed by outliers
What is the range?: distance between the maximum and minimum; used to find outliers
What is the average deviation?: average all the points distance from the center, adds them together,
and usually equals zero
What is the standard deviation?: average of each data points distance from the average
s = sqrt((1/n-1) (sum(xi-x_ave)^2))
Define summary statistics: statistics that describe the POINT around which variation occurs
mean, median, mode
Define spread statistics: statistics that describe the grouping of the data
range, average deviation, standard deviation
What can affect the median?: it can be affected by a low or high mode
What can affect the mean?: the mean is skewed by outliers
What is the range?: distance between the maximum and minimum; used to find outliers
What is the average deviation?: average all the points distance from the center, adds them together,
and usually equals zero
What is the standard deviation?: average of each data points distance from the average
s = sqrt((1/n-1) (sum(xi-x_ave)^2))
