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Fidelitatea alpha, split-half si rtt. pentru scala constiinciozitatii C
Fidelitatea alpha
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Case Processing Summary |
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N |
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Cases |
Valid |
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Excludeda |
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Total |
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a. Listwise deletion based on all variables in the procedure. |
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Reliability Statistics |
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Cronbach's Alpha |
N of Items |
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Item Statistics |
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Mean |
Std. Deviation |
N |
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item3 |
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item6 |
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item9 |
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item12 |
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item15 |
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item18 |
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item21 |
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item24 |
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Scale Statistics |
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Mean |
Variance |
Std. Deviation |
N of Items |
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Item-Total Statistics |
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Scale Mean if Item Deleted |
Scale Variance if Item Deleted |
Corrected Item-Total Correlation |
Cronbach's Alpha if Item Deleted |
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item3 |
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item6 |
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item9 |
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item12 |
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item15 |
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item18 |
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item21 |
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item24 |
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Pentru scala constiinciozitatii avem o fidelitate buna 0,708 ceea ce inseamna ca avem de aface cu o scala care masoara constiinciozitatea destul de exaxt. Observam ca daca am sterge itemul 24 indicele alpha al fidelitatii pe aceasta scala nu s-ar schimba foarte mult in schimb daca am sterge itemul cu nr. indicele fidelitatii ar scadea foarte mult.
Fidelitatea split-half
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Case Processing Summary |
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N |
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Cases |
Valid |
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Excludeda |
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Total |
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a. Listwise deletion based on all variables in the procedure. |
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Reliability Statistics |
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Cronbach's Alpha |
Part 1 |
Value |
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N of Items |
4.000a |
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Part 2 |
Value |
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N of Items |
4.000b |
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Total N of Items |
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Correlation Between Forms |
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Spearman-Brown Coefficient |
Equal Length |
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Unequal Length |
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Guttman Split-Half Coefficient |
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a. The items are: item3, item6, item9, item12. |
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b. The items are: item15, item18, item21, item24. |
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Scale Statistics |
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Mean |
Variance |
Std. Deviation |
N of Items |
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Part 1 |
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4a |
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Part 2 |
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4b |
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Both Parts |
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a. The items are: item3, item6, item9, item12. |
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b. The items are: item15, item18, item21, item24. |
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Dupa cum se observa itemii acestei scale au fost impartiti in doua. Astfel: itemii 3, 6, 9, 12 au obtinut o fidelitate de 0,630 iar itemii 15, 18, 21, 24 au obtinut o fidelitate de 0,479 deci are o fidelitate mai mica decat prima parte iar coeficientul 0,683 este destul de multumitor.
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fidelitate test -retest |
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Alfa |
0.708 |
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Split-half |
0.683 |
Fidelitatea intre test si retest este buna cei care au raspuns si a doua oara la test au fost consecventi in raspunsuri.
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