Technote troubleshooting problemabstract can spss calculate the kuder richardson 20 kr20 and kr21 coefficients of reliability for a scale. I use the kr20 instead of the cronbachs alpha because my items are noted on a binary scale. Writing apa style statistical results kent state university. Were proud to offer comprehensive tools and resources for career planners at all life stages while supporting collaboration between education, business, and community stakeholders to drive economic success. The approximate sampling distribution of kuderrichardson. Reliability coefficients lambda 1 through lambda 6. This guide is intended for use with all operating system versions of the software, including. It should only be used if there is a correct answer for each question it. Spss comes with a syntax reference manual explaining all existing commands. If we use the results from our orthogonal rotation look back at. Kuderrichardson 20 kr20 scale reliability calculation.
The difficulty index of 41 test items was computed using microsoft office excel. The modification consists in the fact that each item was correlated with the. In the dissertation statistics in spss manual, the most common dissertation statistical tests are described using realworld examples, you are shown how to conduct each analysis in a stepbystep manner, examples of the test, example data set used in instruction, syntax to assist with conducting the analysis, interpretation and sample writeup of the results. Ranges from 01 the higher the better greater than 0. Performing a reliability analysis on a measurement tool in which the items are dichotomous. It also provides techniques for the analysis of multivariate data, speci. Calculating reliability of quantitative measures dr. Cronbachs alpha is thus a function of the number of items in a test, the average covariance between pairs of items, and the variance of the total score.
Professor carolyn hicks, health sciences, birmingham university, uk this book was responsible. Of the several formulas by kuder and richardson, one was preferred, which was known to be kuder richardson. The kuder and richardson formula 20 test checks the internal consistency of measurements with dichotomous choices. Spss statistical package for the social sciences is a statistical analysis and data management software package. Doing statistics with spss 21 this section covers the basic structure and commands of spss for windows release 21. Each row corresponds to a case while each column represents a variable. For example, some items might be very easy, others more challenging. The kr20 is a special case of cronbachs alpha in which the items are binary variables usually scored as 0 or 1. Spss can take data from almost any type of file and use them to generate. Reliability refers to how consistent the results from the test are, or how well the test is actually measuring what you want it to measure. Kuderrichardson kr 20 dan naive bayes classifier dalam analisis butir soal hasil ujian tengah semester dengan baik. Apa style results a standardized format for reporting the results of statistical analyses common ground for communication replication verification of experimental results. Manual for the leader behavior description questionnaire form xii an experimental revision ralph m. Conducting a kuderrichardson 20 test kr20 in spss youtube.
It is equivalent to performing the split half methodology on all combinations of questions and is applicable when each question is either right or wrong. Penjelasan uji reliabilitas instrumen lengkap uji statistik. Kudarrichardson 20 cannot be used for response sets that have three or more levels. In addition, kr20 computes the item difficulty proportion of right answers, the average value of item difficulty, the item variance, the itemtest pointbiserial correlation coefficients, and the average value of itemtest correlation coefficients. It assess the intern consistency reliability of a test of subtest made up of binary items, two psychometric methods, kuder richardson formula 20. The following will give a description of each of them.
Reliability analysis on spss lets test the reliability of the saq using the data in saq. How to convert pdf to word without software duration. Use and interpret kr20 in spss hire a statistician. Remember also that i said we should conduct reliability analysis on any subscales individually. Statistics solutions spss manual statistics solutions. Rumus uji reliabilitas teknik non belah dua non splithalf technique. A collection of reliability measures was introduced by kuder and richardson, 1937.
This video demonstrates how to perform a kuderrichardson 20 kr20 test of internal consistency in spss. Uji coba instrumen penelitian dengan menggunakan ms excel dan spss. I just wanted to say how much i value julie pallants spss survival manual. How to use spss kuderrichardson20 kr20 reliability. So far so good until you use statistica or spss where the item. Computes the reliability coefficient of a set of dichotomous items, whereas cronbachs alpha is used for multipoint scales. There are two slightly different versions based on different statistical assumptions. Item analysis with spss software linkedin slideshare. Basic practice of statistics 6th edition by david s. Figure 1 kuder and richardson formula 20 for example 1. Pdf determination of reliability and validity measures of a. Item analysis technique to improve test items and instruction 2.
Automated data preparation adp preparing data for analysis data audit drug treatments exploratory graphsc5. Shalawat serta salam semoga tercurah kepada nabi agung muhammad saw yang telah membimbing umatnya dari gelapnya kekufuran menuju cahaya islam yang terang benderang. It only covers those features of spss that are essential for using spss for the data analyses in the labs. Alternatively, it can be found in the spss installation folder for instance c. Using reliability, validity, and item analysis to evaluate a teacherdeveloped test in international business tracie cooper, ashley pittman, and simona womack abstract authors discuss the importance and the purpose of understanding the proper way to develop and use assessments that would be beneficial in determining achievement outcomes for. Kuderrichardson reliability coefficients kr20 and kr21 ibm.
Ibm kuderrichardson reliability coefficients kr20 and kr21. Kuderrichardson 20 kr20 scale reliability calculation can spss calculate the kr20 reliability figure for assessing scales that are composed of dichotomous items. The most useful measure is generally the kuderrichardson formula 20 kr20. What is the difference between kuderrichardson kr20 and. Stata module to calculate kuderrichardson coefficient.
Can spss calculate the kuderrichardson 20 kr20 and kr21 coefficients of. Kr20 kudarrichardson 20 professional statistician for hire. Spss windows there are six different windows that can be opened when using spss. Korb university of jos reliability overview reliability is defined as the consistency of results from a test. Using and interpreting cronbachs alpha university of. An approximation to the sampling distribution of kuderrichardson reliability formula 20 is derived, using its algebraic equivalent obtained through an itemsbysubjects analysis of variance. Kuderrichardson formula 20, or kr20, is a measure reliability for a test with binary variables i. I am having an issue with kr20 am using alpha on spss but i have read that is how it works. The kudarrichardson 20 kr20 formula generates a raw reliability coefficient for survey items that use these response sets. I want to use the kr20 to learn about the internal consistency of items. The comprehensive test was piloted in one university in perak involving 16 music students. The data editor the data editor is a spreadsheet in which you define your variables and enter data. Our customizable products and services reflect a commitment to encouraging. Stogdill fisher college of business the ohio state university 1963.
Spss stepbystep 3 table of contents 1 spss stepbystep 5 introduction 5 installing the data 6 installing files from the internet 6 installing files from the diskette 6 introducing the interface 6 the data view 7 the variable view 7 the output view 7 the draft view 10 the syntax view 10 what the heck is a crosstab. The reliability of the subscales was determined by a modified kuderrichardson formula. Analisis reliabilitas butir soal dengan metode kuderrichardson kr20. In psychometrics, cronbachs alpha coefficient of reliability in the special case of a scale with passfail, yesno, or other dichotomous test items. Rumus kr 20 dan tutorial cara hitung dengan excel uji statistik. Kuder and richardson formula 20 real statistics using excel. What is the difference between kuderrichardson kr20 and cronbachs alpha and how do you formulate both. Now, you should have reverse scored item 3 see above. Kuderrichardson reliability coefficients kr20 in spss. Rumus kuder richardson 20 apabila pada artikel sebelumnya kita sudah membahas cara perhitungan reliabilitas instrumen dengan excel yang meliputi uji cronbach alpha, split half dan spearman brown, maka dalam artikel ini kita akan membahas cara perhitungan rumus kr 20 dengan menggunakan excel. The theoretical distribution is compared to empirical estimates of the sampling distribution to assess how crucial certain assumptions are. Kuder richardson formula kr20 and the kuder richardson formula 21 kr21. Salah satu kelemahan perhitungan koefisien reliabilitas dengan menggunakan teknik belah dua adalah 1 banyaknya butir soal harus genap, dan 2 dapat dilakukan dengan cara yang berbeda sehingga menghasilkan nilai yang berbeda pula seperti terlihat pada contoh c.
Dear all, i am checking how to do a kuderrichardson reliability coefficients kr20 in spss. Beberapa uji validitas dan reliabilitas pada instrumen penelitian 1116 sri rahayu sanusi 115 contoh. Kuderrichardson reliability coefficients kr20 and kr21. Analisis reliabilitas butir soal dengan metode kuder. Writing apa style statistical results rules, guidelines, and examples. Kudarrichardson 20 kr20 is an internal consistency measure of reliability for survey items using dichotomous response sets. Hasil uji validitas butir 5 gugur, yang sahih saja yang diuji. Using reliability, validity, and item analysis to evaluate. This provides methods for data description, simple inference for continuous and categorical data and linear regression and is, therefore, suf. The resulting \ \alpha \ coefficient of reliability ranges from 0 to 1 in providing this overall assessment of a. Berikut dibawah ini adalah rumus kuder richardson 20. Kudarrichardson 20 is run the exact same way as cronbachs alpha in spss and interpreted the same way as well.