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Presentation transcript:

Welcome Ms. Navarro

Composition Book No fuss or frills needed Yes, composition not spiral! Yes. Will be graded – Keep neat

Standard Deviation Standard deviation- a Statistical analysis that is a measure of how much the data in the experiment varies Represented by Sigma σ

ST. Dev Formula (Population)

ST. Dev Formula (sample)

Standard Error The greater the variance the greater the probability of error

Sample Problem (Step 1) Determine your data. How many hours of sleep do you get on a weekend night? Student Number of Hours 1. 2. 3. 4. 5.

Sample Problem (Step 2) Determine the Mean Mean = Average

Sample Problem (Step 3) Determine Variance Student Number of Hours (x) (𝐱− 𝑥 ) 1. 2. 3. 4. 5.

Sample Problem (Step 4) Find the square root of variance DONE! Now we need to Plot everything!