The Excel spreadsheets on this page have all been written by William Bonk (University of Colorado), who kindly donated them to the Language Testing Resources website when he was no longer able to distribute them through his own web page. The five spreadsheets calculate the basic statistics developed in classical test analysis for closed response items such as.

Is there an alternative to the Cronbach's alpha for scales that have different numbers of items? I believe, an excel macro that can help you calculate AVE.

These include distractor analysis, item facility, a discrimination index, reliability, and descriptive statistics (mean, standard deviation, and standard error of measurement). The spreadsheet for Cronbach's alpha also handles partial credit data. When you first open a file make sure that the spreadsheet is maximised in Excel so you can see all the scroll bars and tabs. In order to do this, click on the expand button in the top right as shown in this illustration. There are additional instructions in portable document format for Cronbach's alpha and the Score Converter..

Score Converter Description: This spreadsheet converts scores to a set of 0's and 1's. On the data input sheet you enter the key in the top row as 'a', 'b', 'c' or 'd' (or another number of options if required). Each subsequent row is a case, in which you enter the response of that person for each item. When you click on the 0's and 1's tab and scroll to the top of the page you will have a set of 0's and 1's that you can cut and paste into other spreadsheets for analysis. Distractor Analysis Description: Analysis of the number of responses to each of the options in multiple choice items (the key and the distractors) can be used to inform the revision of items to maximise item variance. In this spreadsheet the items in the test are listed across the top row, and the cases are in the left column.

For each case (test taker) you enter the answer they gave to the item as 'a', 'b', 'c' or 'd'. Iso Buster V2.4.0.1 Final Keygen [all Languages]. When you scroll down the spreadsheet the number of a's, b's etc. Are summed, and the percentage for each response is also given. Reading: Fulcher, G.

Practical Language Testing. London: Hodder Education, pp. 172 - 173; 191. & Davidson, F. Language Testing and Assessment: An Advanced Resource Book.

London and New York: Routledge, pp. Item Facility and Point Biserial Correlation Description: Item Facility tells us how difficult an item is for the intended population. The Point Biserial Correlation is a measure of discrimination.

In this spreadsheet you paste item responses as 0's and 1's into the cells, with items along the top row and cases down the left hand column. When you scroll down the page the spreadsheet calculates the item facility for each item, and the point biserial correlation (Rpbi: a correlation between a dichotomous and a continuous variables). The spreadsheet was updated in December 2017 and now allows the user to input up to 100 items. Cyberlink Powerdirector 7 Trial Activation Pack on this page.

Reading: Fulcher, G. Practical Language Testing. London: Hodder Education, pp. & Davidson, F. Language Testing and Assessment: An Advanced Resource Book.

London and New York: Routledge, pp. Web Feature: These statistics are primarily for use in the analysis of multiple choice tests.