How do you use Kuder Richardson in SPSS?

The steps for conducting Kudar-Richardson 20 (KR-20)

  1. The data is entered in a within-subjects fashion.
  2. Click Analyze.
  3. Drag the cursor over the Scale drop-down menu.
  4. Click on Reliability Analysis.
  5. Click on the first dichotomous categorical item to highlight it.
  6. Click on the arrow to move the item into the Items: box.

How do you calculate reliability using Kuder Richardson?

Kuder-Richardson Formula 20 (Definition & Example)

  1. The Kuder-Richardson Formula 20, often abbreviated KR-20, is used to measure the internal consistency reliability of a test in which each question only has two answers: right or wrong.
  2. The Kuder-Richardson Formula 20 is as follows:
  3. KR-20 = (k / (k-1)) * (1 – Σpjqj / σ2)

Can you use Cronbach’s alpha for dichotomous variables?

Kuder-Richardson’s coefficient (KR20) is a special case for Cronbach’s alpha when items are dichotomous. Cronbach’s alpha is a generalization of the KR20 formula. When using dichotomous data, Pearson’s r is equivalent to the Phi coefficient.

What is a good KR20?

The KR20 formula is a measure of internal consistency for examinations with dichotomous choices. It produces a correlation measure between 0 where a high KR20 coefficient (e.g., >0.90) is indicative of a homogeneous test. Usually, a KR20 figure of 0.8 is considered the minimal acceptable value.

What is the difference between KR20 and coefficient alpha?

Daniel McNeish is correct in that borth KR20 and Cronbach’s alpha are measures of internal consistency. Internal Consistency refers to the degree to which you are measuring a single construct, but it does not indicate in any way what construct you are measuring. KR20 is used when dealing with dichotomous (binary) data.

What is a good KR-20?

How do you interpret Cronbach’s alpha in SPSS?

The steps for interpreting the SPSS output for Cronbach’s alpha

  1. Look at the Reliability Statistics table, in the Cronbach’s Alpha column.
  2. Look in the Item-Total Statistics table, in the Corrected Item-Total Correlation, record every item that has a value LESS THAN .
  3. If the alpha coefficient was LESS THAN .