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Table 4 Goodness-of-fit indicators of the model

From: Teachers’ adoption of an open and interactive e-book for teaching K-12 students Artificial Intelligence: a mixed methods inquiry

Model t indices

Results value

Recommend value

Chi-square/degree of freedom

2.74

≤ 3

Adjusted goodness-of-fit index (AGFI)

0.808

≥ 0.8

Goodness-of-fit index (GFI)

0.906

≥ 0.9

Normed fit index (NFI)

0.908

≥ 0.9

Comparative fit index (CFI)

0.939

≥ 0.9

Root mean square error (RMSE)

0.08

≤ 0.1

Tucker Lewis Index (TLI)

0.905

≥ 0.9