A distribution of data is ______ if it is not symmetric and extends more to one side than to the other.
What is skewed
100
= (x-x|)/s
What is Z-Score
100
(ch 2) - the dfference between two consecutive lower class limits.
What is Class width
200
The measure of center found by adding the data values and dividing the total by the number of data values.
What is Mean.
200
=(maxvalue-minvalue)/2
What is Midrange
200
The difference between the maximum and the minimum data values.
What is range
200
____ are measures of location which divide a set of data into 100 groups with about 1% of the values in each group.
What is percentiles.
200
shows how a data set is partitioned among all of several classes by listing all of the categories along with the number of data values in each of the categories. (Ch 2)
What is a frequency distribution.
300
The middle value when the data is arranged in increasing or decreasing order
What is the Median.
300
=sum(w*x)/Sum(w)
What is weighted mean
300
is a measure of variation equal to the square of the standard deviation.
What is variance.
300
____ are measures of location which divide a set of data into four groups with about 25% of the values in each group.
What are Quartiles.
300
s^2
What is variance.
400
The value that occurs with the greatest frequency
What is mode.
400
=SQRT [ (Sum(x-x|)^2/(n-1) ]
What is Standard Deviation
400
the symbol ___ stands for mean
What is x|
400
consists of the minimum, Q1, median, Q3, and the maximum values.
What is a 5 number summary
400
68-95-99.7
What is the rule for data with a Bell-Shaped Curve.
500
The measure of center that is the value midway between the maximum and minimum values in the original data set.
What is Midrange
500
is a measure of variation of values about the mean.
What is Standard Deviation
500
The______for a set of nonnegative sample or pipulation data, expressed as a percent, describes the standard deviation relative to the mean.
What is Coefficient of Variation.
500
more than two standard deviations away from the mean or a z-score more or less than 2 or -2 respectively.