Practive Problems

   Ch. 1, Practice Problems: 12, 15, 19, 20, 21, and 22

12.| Explain and give an example for each of the pursuance types of variables: (a) equal-interval, (b) rank- ready, (c) nominal, (d) ratio scale, (e) continuous. (a) Equal-interval is when the number signifies an equal marrow of what is being measured.Example: 0-5 evaluate in the courses survey.1-3 is the same as 3-5. (b) Rank-order is when a variable stands for or is arranged according to rank.Example: an individuals placing in a race would be an example. There is not an equal amount from 8th to 1st place. (c) Nominal is generally a strike or category, not a numeric variable. Generally ground on levels of measurement.Example: a type of eye shadow, the options being scramble shadow or powder shadow. There are twain options, categories. (d) Ratio Scale is used to measure amounts of accumulations of things. It is used with levels of measurements.Example: how some(prenominal) puppies in a liter. 0 being no puppies and so on. (e) Continuous is usually an infinite number of values amidst numbers, it does not have a specific number.Example: height would be an example as it adjusts|
15.



| Fol commencementing are the speeds of 40 cars clocked by radar on a particular road in a 35-mph zone on a particular good afternoon: 30, 36, 42, 36, 30, 52, 36, 34, 36, 33, 30, 32, 35, 32, 37, 34, 36, 31, 35, 20, 24, 46, 23, 31, 32, 45, 34, 37, 28, 40, 34, 38, 40, 52, 31, 33, 15, 27, 36, 40|
Make (a) a frequency table and (b) a histogram. Then (c) describe the general shape of the distribution.(c) the shape would be a bell shape, if you draw the line. It starts low, rises up and then goes low again.|
19.| Give an example of something having these distribution shapes: (a) bimodal, (b) approximately rectangular, and (c) positively skewed. Do not use an example given in this allow or in class. (a) Bimodal: the height of people, without gender tone (b) Approximately Rectangular: flipping a coin (c) Positively reorient: Countrys...If you want to get a full essay, order it on our website: Orderessay



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