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Basic analysis Process the data validation editing coding data entry

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Presentation on theme: "Basic analysis Process the data validation editing coding data entry"— Presentation transcript:

1 Basic analysis Process the data validation editing coding data entry
cleaning

2 Tabulation frequency tables cross tabulations graphic representation
base for percentages cross tabulations graphic representation descriptive statistics mean, median, mode variance, standard deviation, range percentage, frequency

3 Statistical Testing t-test of a single mean (pg. 580)
t-test of a proportion (pg. 585) t-test of two means (pg. 584) t-test of two proportions (pg. 587)

4 steps in hypothesis testing
set up a hypothesis determine what would happen if the hypothesis was true run an experiment or study calculate a statistic determine the probability of that statistic if the hypothesis was true decide whether or not to reject the hypothesis

5 issues in hypothesis testing
type 1 (alpha) or type 2 (beta) error one or two tailed tests accept or fail to reject independent or related samples degrees of freedom p-values and statistical tests

6 Other statistical tests
single sample chi-square test two sample chi-square test Kolmogorov-Smirnov test


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