Statistical Analysis for Education and Psychology Researchers

How many individuals should be allocated to each experimental group? How will individuals be allocated to experimental groups? ...

Is the design efficient? e.g., Is the design balanced, is sampling error reasonable and will precision be adequate, have potent ...

Chapter 2 Measurement Issues Educational researchers are often interested in students’ knowledge, abilities, aptitudes or person ...

A statistical variable is one which is measured or enumerated (counted). When interest focuses on physical measurements, such as ...

Number of pupils in sixth form (e.g., 120) Each of these variables represents a property or characteristic of a school which i ...

November 1994, the School League Table of Examination results was published. Selecting at random Bolton Education Authority in t ...

position. If two schools have the same pass rate they are both assigned a rank, but this rank is calculated as the average of th ...

numbers in measuring phenomena is dependent upon properties that apply to the phenomena. It is not essential that a measurement ...

data include Spearman’s Rho and Wilcoxon Mann-Whitney (see Chapter 7). These tests are frequently used with higher levels of mea ...

A Do you agree that St. James’ RC School has twice as good an exam performance as St. John Moore’s School? The St. John Moore Sc ...

Many educators would not agree with the initial assumption that number of examination passes is indicative of a school’s academi ...

have to, as Hayes (1981) comments, ‘judge the reinterpretability of the numerical results into a valid statement about propertie ...

study. More recently this path has been followed by the national curriculum development and testing programme in the United King ...

and a clear description of how to measure performance and use tests, including advice on test construction and interpretation is ...

coefficients were based should be checked. Sample sizes of at least 100 are required for satisfactory validity. Another importan ...

Richardson K- R 20 variability to total score variability. Equivalent to Cronbach’s Alpha but modified for dichotomous scoring. ...

achievement. Each of the sample means would of course vary to some extent around the true population mean and this variability o ...

measures and hence their trustworthiness. Validity should be seen more as an issue of validity of inference or generalizability ...

Chapter 3 Initial Data Analysis This chapter introduces the important, but often overlooked, topic of initial data analysis (IDA ...

Also check whether the variable measured is appropriate for the construct of interest. For example, the construct ‘social class’ ...