Calculate the Mean and Standard Deviation for Each Group from the Data

question 19

Multiple Choice

Calculate the mean and standard deviation for each group from the data below. ANSWERS
If the equation for the above study was: score = (b₀ + b₁PST_i + b₂gender_i + b₃interaction_i) +E_i, how would you express the interaction effect between the PST and the gender?

• A) PST × gender
• B) PST + gender
• C) PST / gender
• D) PST - gender

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