Which of the following statements is true of hypotheses? They can be derived from current business situation but not from previous research theory. hey are developed prior to data collection. They are proven suppositions that explain facts or phenomena. They are used to validate data in the data preparation process. They are used to convert measures of dispersion into measures of central tendency.

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42