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Methodical & Stats Analysis Flashcards

7 cards from real BAPSY practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Methodical & Stats Analysis flashcards as text
  1. A researcher finds r = 0.85 between study hours and exam scores. What does this indicate?

    Answer: A strong positive linear relationship

    r = 0.85 indicates a strong positive linear relationship, but correlation does not imply causation.

  2. Which of the following best describes a Type II error?

    Answer: Failing to reject a false null hypothesis

    A Type II error (beta error) occurs when a researcher fails to reject a null hypothesis that is actually false.

  3. In an ANOVA, the F-ratio is computed as:

    Answer: Between-group variance / Within-group variance

    The F-ratio in ANOVA equals between-group variance (MSB) divided by within-group variance (MSW).

  4. Which sampling method gives every member of a population an equal chance of being selected?

    Answer: Simple random sampling

    Simple random sampling assigns each population member an equal and independent probability of selection.

  5. A chi-square test of independence is most appropriate when:

    Answer: Both variables are categorical

    Chi-square tests of independence evaluate whether two categorical variables are associated.

  6. What does statistical power refer to?

    Answer: The probability of correctly rejecting a false null hypothesis

    Statistical power is the probability (1 − β) of detecting a true effect when one exists.

  7. Which measure of central tendency is most resistant to extreme outliers?

    Answer: Median

    The median is resistant to outliers because it is based on rank position, not actual values.