Lecture 5

# Lecture 5 - Area under a Gaussian curve ormal error curve...

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hapter 4. Statistics (I) Chapter 4. Statistics (I) Goal is to use a small set of experimental results to estimate the statistical parameters that describe the “large set of results.” Count on “normal” days Today 5.1 5.3 4.8 x 10 6 cell/ μ L 5.6 x 10 6 cell/ μ L 5.4 5.2 Is red blood cell concentration normal?

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Concepts in statistics: Gaussian Distribution
Concepts in statistics: Mean: Standard deviation Degree of freedom: ariance: Variance: Population Mean: Population ndard deviation: opu at o sta da d de at o

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Count on “normal” days Today 5.1 5.3 4.8 4 x 10 6 cell/ μ L 5.6 x 10 6 cell/ μ L 5.4 5.2 Calculate Mean and standard deviation in the concentrations of red blood cells during normal days.

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Unformatted text preview: Area under a Gaussian curve: ormal error curve: Normal error curve: 2 / 2 1 z − 2 e y π ample: uppose the manufacture of the bulbs used for the figure above Example: Suppose the manufacture of the bulbs used for the figure above offers free of change any bulb that burns out in less than 600 hours. If they plan to sell a million bulbs, how many extra bulbs should they keep available s replacement. as replacement. Percentage experiments in a number of standard deviations 2 / 2 1 z e y − = 2 π Range Percentage of measurements μ ± 1 σ 68.3 μ ± 2 σ 95.5 μ ± 3 σ 99.7...
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Lecture 5 - Area under a Gaussian curve ormal error curve...

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