Tom wants to use a computer program to assess the reliability of his new intelligence test. the test has 10 items, and the computer program finds the average of all possible split-half correlations between groups of 5 items. what measure of reliability did he use?

Cronbach's alpha

Explanation:

Cronbach's alpha is used to measure consistency interms of how closely associated items in a group are.

It measures the scale of reliability as a coefficient of reliability not statistically.

below is a formula that is used to calculate this reliability.

α=N¯c/¯v+(N−1)¯c

Here N  equate to the number of items, ¯c is the average inter-item covariance among the items and ¯v equals the average variance.

The increase number of items will increase Cronbanch's Alpha.

Additionally, if the average inter-item correlation is low, alpha will be low. 

i dont know but thats a great qusestion

ne pare rău, dar când mi-am căutat întrebarea, doar avioanele au apărut .. deci, ar putea fi răspunsul, sau ar putea fi baloane cu aer cald, deoarece acestea pot conta și ca ambarcațiunile de aer, dar nu sunt complet sigur de asta. a fost doar o presupunere, sper că am ajutat, îmi pare rău dacă nu am făcut-o. de asemenea, folosesc traducerea google, pentru a traduce ceea ce spun în engleză, așa că îmi pare rău dacă gramatica sau chiar limba nu este corectă