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U13 L4 ZScores.notebook November 01, 2016
mean = 54.2
s.d. = 17.6
[ 36.6 71.8 ]
six months
119.8.6
= 2 above 2.3% of 5,000 = 115 boxes
U13 L3 Practice Packet
U13 L4 ZScores.notebook November 01, 2016
U13 L4ZScores
U13 L4 ZScores.notebook November 01, 2016
Z Scores
ZScores are the exact standard deviations.
Example: 1.35 standard deviations
* We still have () that represent below the mean and (+) to represent above the mean.
The normal curve only offers us standard deviations at .5 increments.
U13 L4 ZScores.notebook November 01, 2016
U13 L4 ZScores.notebook November 01, 2016
The formula used to calculate zscores is:
zscore = data point mean
Ex #1
Calculate the zscore for a data point of 400 in a set of data with a mean of 500 and a standard deviation of 50.
U13 L4 ZScores.notebook November 01, 2016
Comparing SAT scores VS. ACT scores
U13 L4 ZScores.notebook November 01, 2016
U13 L4 ZScores.notebook November 01, 2016
U13 L4 ZScores.notebook November 01, 2016
U13 L4
Z Scores
Homework Online