Question: True or False ? In a contingency table, if row percentages in one row are very different from those in another row, that indicates association.

TrueorFalse?

  1. In a contingency table, if row percentages in one row are very different from those in another row, that indicates association.
  2. If a parameter is computed from a data set, the data were obtained from a census.
  3. If X and Y are random variables with standard deviations of 3 and 4 respectively, then it is always true that the standard deviation of X+Y is 5.

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