Statistics Questions & Answers

Statistics Questions & Answers 13 - ANSWER: What is the lower class limit in the class 13-17? 35.5 - ANSWER: Using the class 23-35, what is the upper class boundary? 52 - ANSWER: A linear regression line y = 0.8x - 10 is computed to predict the final exam score y on the basis of the first score x on the first test. Suppose Maria scores a 78 on the first test. What would be the predicted value of her score on the final exam? 88 - ANSWER: A linear regression line y = 10 + 0.9x is computed to predict the final exam score y on the basis of the first score x on the first test. Suppose Maria scores a 87 on the first test. What would be the predicted value of her score on the final exam? A frequency distribution is the organization of raw data in table form, using _____ and _____. - ANSWER: classes; frequencies A Pareto chart does not have which of the following properties? - ANSWER: quantitative variable on the horizontal axis A pie graph is not useful to show which of the following characteristics of data? - ANSWER: The trend of the data over time A pie graph is not useful to show which of the following characteristics of data? - ANSWER: The trend of the data over time A statistics student obtains a sample data from one of his classes and finds that the average student takes 5.2 classes. - ANSWER: Discrete A stem and leaf plot is useful for - ANSWER: Showing the distribution of costs of textbooks for various courses