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View Resource Statistics at Square One: Differences Between Percentages and Paired Alternatives

This topic from an online textbook discusses standard error, confidence interval, and significance testing for a difference in percentages or proportions. It also covers paired alternatives and...

http://bmj.bmjjournals.com/collections/statsbk/6.shtml
View Resource Statistics at Square One: Differences Between Means

This section of an online textbook examines testing for differences of two means and the standard deviation and confidence interval for a difference in two means. It also explains the null and...

http://bmj.bmjjournals.com/collections/statsbk/5.shtml
View Resource Statistics at Square One: Statements of Probability and Confidence Intervals

This section of an online textbook discusses, through examples, making statements about the probability of an occurence based on standard deviation. It additionally explores using confidence...

http://bmj.bmjjournals.com/collections/statsbk/4.shtml
View Resource Statistics at Square One: Populations and Samples

This is part of an online textbook, which defines populations and samples, bias and randomization, variation between samples, standard error of the mean and of a proportion. Related exercises are...

http://bmj.bmjjournals.com/collections/statsbk/3.shtml
View Resource Statistics at Square One: The Chi-Squared Tests

Through example, this site discusses aspects of the chi-squared distribution and how it is carried out, demonstrated through formulas and calculations. It explains 2x2 tables and its relation to the...

http://bmj.bmjjournals.com/collections/statsbk/8.shtml
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