(a) Sketch a graph of velocity versus time corresponding to the graph of displacement versus time given in Figure 2.55. (b) Identify the time or times ( ta , tb , tc , etc.) at which the instantaneous velocity is greatest. (c) At which times is it zero? (d) At which times is it negative?
Stat. notes Chapter 1 cont. Scales or measurements Nominal= “set of categories that have different names” 1. Gender 2. Race 3. Occupations Ordinal “Set of categories that have organized in an ordered sequence” 1. 1,2,3 ranked in a race 2. Distance between each of the categories not always equal Interval= “consents of ordered categories that are of the same interval of the same size” 1. Zero is arbitrarymade up placement 2. 0 degrees is still a temp. Ratio= “additional features of as absolute zero point” 1. Same as interval 2. Zero means something 3. Height 4. Weight Notation in Stat. a) X. Denotes scores for a variable b) Multiple variables exist use more times