SALAH ANGGAP TENTANG STATISTIK

MISCONCEPTION ABOUT  STATISTIK (By Schugler W. Huck

•  There are three different measures of central tendency: the mean, the median, and the mode.
•  If one large group is made up of two subgroups (e.g., males and females), and if the mean score for each subgroup is available on a variable of interest, then the mean for the full group can be computed as the mean of the two subgroup means.
• For any distribution of scores that's illustrated with a histogram or a smooth curve, the mode is located at the top of the tallest bar (in a histogram) or at the apex of the highest, or perhaps only, "hump" (in any picture that uses a curved line to show the distribution).
• The standard deviation indicates the average (i.e., mean) numerical discrepancy between individual scores and the mean score for the group.