## Understanding and Using Statistics in Psychology: A Practical IntroductionUnderstanding and Using Statistics in Psychology takes the fear out of psychological statistics to help students understand why statistics are carried out, how to choose the best test, how to carry out the tests, and then perform the analysis in SPSS. Emphasizing the place of statistical analysis in the process of conducting research, from design to report writing, this accessible and straightforward guide takes a non-technical approach, encouraging the reader to understand why a particular test is being used and what the results mean in the context of a psychological study. The focus is on meaning and understanding rather than numerical calculation. |

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### Contents

Samples populations and the normal distribution | 52 |

conﬁdence limits and statistical signiﬁcance | 80 |

Analysing data from repeated measures experiments | 185 |

Copyright | |

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### Common terms and phrases

Active rehabilitation alpha analysis ANOVA answer assumption Bayesian Bonferroni Bonferroni correction boxplot calculate the standard called chapter chart chi-square Click column Common Mistake confidence intervals continuous correct correlation critical value Deﬁne degrees of freedom Depressed descriptive statistics difference difﬁcult doesn,t don,t effect equal equation example Figure ﬁnal ﬁnd ﬁnding ﬁrst formula give given going helmet histogram independent groups initial phoneme it,s kappa look Mann—Whitney mean score median normal distribution null hypothesis odds ratio Optional Extra p-value person phoneme population mean post hoc probability value problem psychology ranks regression reject the null repeated measures design scale scatterplot shows signiﬁcance testing signiﬁcant result skew SPSS standard deviation standard error statistically signiﬁcant Step sums of squares t-test tell that,s thing true type I error unpooled variance variable variance t-test want to know write wrong zero