STATISTICS
Higher Concepts of Mathematics
The 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.
Summary
The important information in this chapter is summarized below.
Statistics Summary
Mean
-
The sum of a group of values divided by the number
of values.
Frequency Distribution
-
An arrangement of statistical data that exhibits the
frequency 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 each
data point’s variance.
Probability of Success
-
The chances of being successful out of a number of
tries.
s
P =
s+f
MA-05
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