A key property of the normal distribution is that a certain percentage of data values are within 1, 2 and 3 standard deviations of the mean:
normal-distribution.pdf
example on the right ? One example of a variable that has a Normal distribution is IQ In the population, the mean IQ is 100 and it standard deviation,
the_normal_distribution_notes.pdf
That is, rather than directly solve a problem involving a normally distributed variable X with mean µ and standard deviation ?, an indirect approach is used 1
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Draw a normal curve - --- Mean = 60 2 35" 3rl376 ^ 2 35 71354 113 945 Standard Deviation = 20 - 3 2 -1 i 3 o 20 40 60 80 100 120 What percent of
Standard-Deviation-and-Normal-Distribution-Completed-Notes2.pdf
A z table can be used to calculate that 9938 of the scores are less than or equal to a score 2 5 standard deviations above the mean It follows that only 1-
normal_distribution_overview.pdf
Fusion, Page 4 Standard Scores The 68-95-99 7 rule applies to data values that are exactly 1, 2, or 3 standard deviations from the mean For other cases, we
Section6C-NormalDistribution-StudentNotes-EVEREST-KEY.pdf
1 Find the range of values that represent the middle 99 7 of the distribution SOLUTION: The middle 99 7 of data in
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For the normal distribution shown below, estimate the percent of the data that lies within one, two, and three standard deviations of the mean Each square on
alg2_pe_11_01.pdf