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Unit 6: Measurement and evaluation of human performance
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Using a T-Test: http://youtu.be/BlS11D2VL_U

T-Test: Calculator: http://www.physics.csbsju.edu/stats/t-test.html

Standard Deviation: http://youtu.be/62i1fqKhNhg




 

Assessment statement

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6.1.1

Outline that error bars are a graphical representation of the variability of data.

2

6.1.2

Calculate the mean and standard deviation of a set of values

2

6.1.3

State the statistical standard deviation is used to summarize he spread of values around the mean, and that within a normal distribution approximately 68% and 95% of the values fall within plus or minus one or two standard deviations respectively.

1

6.1.4

Explain how the standard deviation is useful for comparing the means and the spread of data between two or more samples.

3

6.1.5

Outline the meaning of coefficient of variation

2

6.1.6

Deduce the significance of the difference between two sets of data using calculated values for t and the appropriate tables.

3

6.1.7

Explain that the existence of a correlation does not establish that there is a causal relationship between two variables.

3