Rubinas STATISTICS FOR EVIDENCE-BASED PRACTICE AND EVALUATION has a proven ability to reach students and get them excited about--and see the relevance of--a course they often find intimidating. Presented in an authoritative yet humorous style, this text--designed specifically for statistics and evaluation courses in the helping professions--features cases, exercises, and many examples to bring the topic of statistics alive for student readers. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.Standard Deviation R ecall from Chapter 5 the following symbols: X = The sample mean a = The sum of all of the items to the ... Because the standard deviation is simply the square root of the variance, the formula for calculating the standardanbsp;...

Title | : | Statistics for Evidence-Based Practice and Evaluation |

Author | : | Allen Rubin |

Publisher | : | Cengage Learning - 2012-01-06 |

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