Statistics Fundamentals Unit 2 Challenge 2,100% CORRECT

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Which term describes the characteristic of each member of a population? • a.) Distribution • b.) Variable • c.) Data set • d.) Frequency Which term below is a number that describes ... how the data is dispersed across the entire range of data? • a.) Shape • b.) Center • c.) Outlier • d.) Spread Olivia graphed the data she had collected about monthly utility costs. Her graph is below. Which of the following statements would be a characteristic of Olivia's graph? • a.) The values in the graph are positively skewed. • b.) The values in the graph are negatively skewed. • c.) The values in the tallest bins represent local modes. • d.) The values in the graph are distributed uniformly. There are 10 bags containing tickets numbered 1 to 20. Ten students draw a ticket from each bag. One student drew tickets with the numbers: 5, 8, 18, 1, 14, 6, 8, 13, 8, 19 Select the option that shows the correct mean, median, and mode. • a.) mean: 10 median: 8 mode: 8 • b.) mean: 10 median: 8 mode: 19 • c.) mean: 12 median: 8 mode: 19 • d.) mean: 8 median: 8.5 mode: 8 A student has an average of 86% on the unit tests, 85% on the final test, 90% on the class project, and 92% on homework submissions. If the unit tests count for 25% of the final grade, the final test counts for 40%, the class project counts for 15%, and homework submissions count for 20%, what is the weighted average grade of the student? • a.) 86% • b.) 86.4% • c.) 87.4% • d.) 88% When Mark was looking at his monthly utility payments, he noticed that one payment was significantly lower than all the others. Which of the following would be most affected by Mark's observation? • a.) The median monthly payment. • b.) The most frequent monthly payment. • c.) The highest monthly payment. • d.) The average monthly payment. What does a low value for the measure of variation for a data set imply? • a.) The data is spread out from the center. • b.) The data set is normally distributed. • c.) The data is bunched up near the center. • d.) The data set contains one or more outliers. What percentage of data does the interquartile range represent? • a.) 100% • b.) 75% • c.) 25% • d.) 50% The mean cost for a pint of strawberries is $2.20, with a standard deviation of $0.50. What is the value of the variance? • a.) $1.00 • b.) $0.50 • c.) $1.70 • d.) $0.25 Consider the following data set with a mean of 12: 9, 11, 12, 16 Using the equation below or the standard deviation formula in Excel, calculate the standard deviation for this data set. Answer choices are rounded to the hundredths place. • a.) 2.94 • b.) 1.54 • c.) 2.55 • d.) 5.09 The following box-and-whisker plot shows the test scores for students in a math course. According to this box-and-whisker plot, the third quartile (Q3) value is _____. • a.) 11 • b.) 23 • c.) 15 • d.) 35 Using the number of minutes per call in last month's cell phone bill, David calculated the upper quartile to be 19 minutes and the lower quartile to be 12 minutes. Any value greater than ______ minutes is an outlier. • a.) 26 • b.) 29.5 • c.) 10.5 • d.) 19 Alex scored ten standardized tests with scores of: 84, 56, 71, 68, 94, 56, 92, 79, 85, and 90. Which standardized test score represents the 70th percentile? • a.) 79 • b.) 92 • c.) 85 • d.) 90 [Show More]

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