Questions: Your study evaluating self-confidence has a Cronbach's alpha of 0.2 . You know this means: (A) the concept of self-confidence is measured well in the study. B it has moderate internal consistency reliability but low validity. (C) it may need to be reevaluated because the internal consistency reliability is low. (D) homogeneity is high, so the concept is measured inconsistently.

Solution Steps

To determine the correct interpretation of a Cronbach's alpha value of 0.2, we need to understand what Cronbach's alpha measures. Cronbach's alpha is a measure of internal consistency, or how closely related a set of items are as a group. A low value (typically below 0.7) indicates low internal consistency.

• Cronbach's alpha of 0.2 is very low, indicating poor internal consistency.
• This suggests that the items in the study do not reliably measure the same underlying concept.
• Therefore, the correct interpretation is that the internal consistency reliability is low, and the study may need to be reevaluated.

Cronbach's alpha (\( \alpha \)) is a measure of internal consistency, which assesses how closely related a set of items are as a group. It is commonly used to evaluate the reliability of a psychometric instrument.

Given \( \alpha = 0.2 \), we need to interpret this value. Typically, an \( \alpha \) value below 0.7 indicates low internal consistency.

Since \( \alpha = 0.2 \) is significantly below 0.7, it suggests that the items in the study do not reliably measure the same underlying concept. This low value indicates poor internal consistency reliability.

Final Answer