Statistics 211 Questions & Answers

Statistics 211 Questions & Answers 1 Nominal Level - ANSWER: applies to data that consist of names, labels, or categories. There is no implied criteria. 2 Ordinal Level - ANSWER: applies data that can be arranged in order. However, differences between data values either cannot be determined or are meaning less 3 Interval Level - ANSWER: applies to data that can be arranged in order. In addition, differences between data values are meaningful. 4 Ratio Level - ANSWER: applies to data that can be arranged in order. Data at ratio can have a true zero. Age of student - ANSWER: ratio Assign each business in the island business directory a number, and then use a random-number table to select the business es to be included in the sample. - ANSWER: Simple random simple bimodal - ANSWER: histogram in which the two classes with the largest frequencies are separated by at least one class. circle chart or pie chart - ANSWER: wedges in a circle visually display proportional parts of the total population that share a common characteristic. class width - ANSWER: largest data value- smallest data value/ desired # of classes Cluster Sample - ANSWER: divide the entire population into pre-existing segments or clusters. The clusters are often geographic. Include every member of each selected cluster cluster in the sample. Convenience Sample - ANSWER: create a sample by using data from a population that is readily available