Can cronbach alpha can be used to calculate the consistency of an NBA player performance? The value for Cronbach’s Alpha can range between negative infinity and one. It is most commonly used when you have multiple Likert questions in a survey/questionnaire that form a scale and you wish to determine if the scale is reliable. You can perform Cronbach’s with only two “raters” (for example two questions). If you need to learn more about Cronbach’s alpha, click here to read it. It was possible to calculate α of a questionnaire with the help of free computer software.Cronbach's alpha for any number of questions and responses can be calculated in similar fashion. What's the difference between Koolaburra by UGG and UGG? Code to add this calci to your website Just copy and paste the below code to your webpage where you want to display this calculator. Once you decide this, you can use Cronbach’s alpha (at least with any of the above codings). Thank you. The Cronbach’s coefficient alpha is a lower bound for the reliability coefficient for the raw variables and the standardized variables. I don’t completely understand the situation that you are describing, but here are some observations which may help: Hello Saeeda, Regards, Cronbach’s alpha is a measure used to assess the reliability, or internal consistency, of a set of scale or test items. https://www.researchgate.net/publication/328567140_Calculating_the_Cronbach's_alpha_coefficients_for_measurement_scales_with_not_applicable_option Code to add this calci to your website Just copy and paste the below code to your webpage where you want to display this calculator. Thankyou so much for replying! I have used an online tool to calculate this. In my case which test can be used to see whether three populations have the same distribution? If you have conducted the calculations correctly, then a negative result would indicate low reliability. Calculation of Cronbach's alpha in cell E13 with the calculated value of B12, E12, and B13 in OpenOffice™ Calc spreadsheet Figures - uploaded by Himel Mondal Author content To That For KR20 As Well As By Using ANOVA' What does it mean to be an Alpha Phi Alpha? How do you test the validity and reliability of a questionnaire? I cannot seem to find an explanation for this online anywhere. This indicates that question 4 is not reliable and should be removed from the analysis. You could use Anderson-Darling’s two-sample test to determine whether samples A and B come from the same population. I asked them 3 questions to measure their trust in the model they worked with in a 5-point Likert-type scale. Charles. This is up to you, but it is not clear how you would use such a combined value. Charles. After a period of time, all subjects are submitted to the same questionnaire and again I compute Cronbach’s Alpha. Since the calculation of Cronbach’s Alpha depends on the inter-correltation, this table shows which question has low correlation. Charles, Hi Charles, I would simply leave these responses out of the calculations. Validity is the extent to which the scores from a measure represent the variable they are intended to. How can I convert it in positive. We thus define a test made up of questions If this is taken care of, then you need to look carefully at the questionnaire (or whatever instrument) that you are using. I have another question, if I calculate each Cronbach Alpha scores for likelihood and impact, should I consider it per risk or per risk category? Hello Titi, if you have two questions that measure the same thing except that one is phrased positively and the other negatively (called reverse coding), then you need to correct for this in the coding of the responses, otherwise the Cronbach’s alpha value won’t be correct. 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