Statistical Analysis for Education and Psychology Researchers

Choosing a statistical test 155 ...

Figure 5.13: Histogram and normal probability plot for arcsine transformed variable ‘CORRD’— percentage correct difficult readin ...

where xi is the original score and J is a constant from which each score is subtracted so that the smallest score is 0.5. J is t ...

Interpretation of transformed scores is sometimes difficult. For example, if a log transformation is used then a mean log score ...

Chapter 6 Inferences Involving Binomial and Nominal Count Data One-Sample Tests (two measures)^ 6.1 One-sample χ (^2) test of in ...

6.3 Fisher’s Exact Test 181 A test for studying differences in two independent groups (2×2 contingency table) and is particularl ...

(mode of transport to work; walk, public transport, bicycle, own car); ordered category, when frequency counts are arranged into ...

also shown and the pragmatic consequences of particular violations, some of which are more serious than others, are discussed. I ...

One-sample χ^2 test of independence with random row and column marginal totals In this design a random sample is drawn from a si ...

Statistical Inference and Null Hypothesis Statistical inferences are about counts or relative frequencies with respect to define ...

Test Assumptions The Chi-square test is widely used but is also one of the most misused statistical procedures. Basic assumption ...

(^) Understanding of Educational Issues (^) An increase reported No increase reported Gender: Total Male 21 27 48 Female 10 69 * ...

taken as reasonable. An analysis of non-response by gender would strengthen the independence of observations assumption. (Close ...

From the observed frequencies, 4.55 per cent (1/22×100) of parents whose children attended private schools were contacted by psy ...

The χ^2 value is calculated for each cell in a contingency table. It is calculated as the difference between each observed and c ...

The investigators reported a χ^2 value of 14.00, df=1. The difference between the reported value in the original paper and the c ...

issues following their MEd course (see Figure 6.1), this data can be entered into a SAS programme using the following lines of c ...

Chi-square 1 15.643 0.000 Phi Coefficient 0.351 Cramer’s V 0.351 Sample Size=127 Figure 6.3: Output for Chi-square analysis The ...

When a significant association between two variables is detected, it is sensible to consider whether a third variable might expl ...

required because candidates often do not guess at random; they may use partial knowledge.) Statistical Inference and Null Hypoth ...