STATISTICS Higher Concepts of MathematicsThe probability of drawing a black ball is:7/(7+3) = 7/10.Therefore, the probability of both events happening at the same time is:7/10 x 1/2 = 7/20.SummaryThe important information in this chapter is summarized below.Statistics SummaryMean - The sum of a group of values divided by the numberof values.Frequency Distribution - An arrangement of statistical data that exhibits thefrequency of the occurrence of the values of a variable.Variance - The difference of a data point from the mean.Mean Variance - The mean or average of the absolute values of eachdata point’s variance.Probability of Success - The chances of being successful out of a number oftries.sP =s+fMA-05 Page 10 Rev. 0
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