2 5 standard deviation

Do Now, Calculate these values ,[object Object],[object Object],[object Object],[object Object],[object Object],Providence Jefferson 10 7.7 9.3 7.7 8.5 7.7 7.7 7.4 7.7 7.3 6.7 7.1 6.2 6.8 5.8 6.7 5.4 6.6 4.2 6.5

Measures of Variation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Range ,[object Object],[object Object],[object Object]

Standard Deviation ,[object Object],[object Object],[object Object],[object Object],[object Object]

Population Standard Deviation ,[object Object],[object Object],[object Object],[object Object]

Standard Deviation ,[object Object],[object Object],[object Object],[object Object]

Calculating a Standard Deviation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Live Example: Jefferson Valley 7.7 7.7 7.7 6.5 7.4 7.3 7.1 6.8 6.7 6.6

Your turn: Providence 6.2 5.8 5.4 4.2 6.7 7.7 10 9.3 8.5 7.7

Rounding ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Homework ,[object Object],[object Object]

Uses Standard Deviation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Estimating Frequencies ,[object Object],mean mean + s mean + 2s mean + 3s mean – 3s mean – 2s mean – s 34% 34% 17% 17% 2.4% 2.4% 0.1% 0.1% 68% 95% 99.7%

Distribution Spread of Bank Data 0 (mean) +1s +2s + 3s -3s -2s -1s

Outliers and Unusual Values ,[object Object],[object Object],mean mean + 2s mean – 2s 2.5% 2.5% 95%

Outliers and Unusual Values ,[object Object],[object Object],[object Object],[object Object],[object Object]

Frequency Table ,[object Object],[object Object],[object Object],[object Object],[object Object]

Building a Frequency Table ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IQ Scores ,[object Object],[object Object]

IQ Frequency Table Frequency UCB LCB

Using Mean and Std Dev to curve a tests ,[object Object],[object Object],[object Object],C+ B B+ A F D D+ C A+

Your Turn ,[object Object],[object Object],[object Object],[object Object]

Homework ,[object Object],[object Object],[object Object],[object Object]

Frequency Table: Male Frequency UCB LCB

Frequency Table: Female Frequency UCB LCB

2 5 standard deviation

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2 5 standard deviation