Unit 9: Statistics

4.0 (1 review)
relative frequency
Click the card to flip 👆
1 / 20
Terms in this set (20)
relative frequency
It is the frequency for an interval divided by the total number of data values.
frequency
number of times something occurs
Skewed Left Distribution
Image: Skewed Left Distribution
Skewed Right Distribution
Image: Skewed Right Distribution
mean
the average of a data set, obtained by adding the scores and then dividing by the number of scores
range
the difference between the highest and lowest scores in a data set
median
the middle score in a data set; half the scores are above it and half are below it
mode
the most frequently occurring score(s) in a data set
dot plot/line plot
Uses dots or x's to organize frequency of data over a number line
histogram
A bar graph of data grouped into intervals or ranges. (ex: 0-10)
Statistical Questiona question that has variability & multiple answersNumerical DataData that consists of numbers/ QuantitativeCategorical DataData that consists of names, labels, or other nonnumerical values/ QualitativeDistributionthe overall shape of databar grapha diagram of categorial data as proportional rectanglesbox plota number line diagram of range, median, and interquartile range.outliera value far from the others in a data set. (ex: 1, 2, 2, 3, 4, 25)deviationhow far apart a data point is from the mean/average. Can be positive or negative.MADMean Absolute Deviation: the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.IQRinterquartile range (Q3-Q1)