# Stats.Unit2.Challenge2.docx - 1 u2014 Distributions Define...

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1 — Distributions Define elements of a distribution. Which of these statements is FALSE? a.) The distribution can be summarized by a frequency table. b.) The distribution describes what values the variables take and how often they take those values. c.) A data set is a list of numbers that is associated with context. d.) A data set is a characteristic of an individual member of the population that can be measured. d.) Correct. A characteristic of an individual member of a population that can be measured is not a dataset. This would be a single observation for one variable. 2 — Data Analysis Identify the four components of data analysis.
Which term below is a number that describes how the data is dispersed across the entire range of data? a.) Outlier b.) Shape c.) Spread d.) Center c.) Correct. Recall that spread is how data is dispersed. In general we like to think of the spread in relationship to the center of the distribution 3 — Shapes of Distribution Describe shapes of distributions. Olivia decided to look at utility costs for each of her potential new homes. As she graphed the data, she noticed there was a tail on the right side of the graph. Which of the following statements would NOT be a characteristic of Olivia's graph? a.) The data in Olivia's graph is not distributed symmetrically. b.) Olivia's graph is positively skewed.
c.) The tail in Olivia's graph is situated to the left of the median. d.) The data in Olivia's graph is not distributed uniformly. c.) Correct. Since the tail of her distribution of utility costs go to the right, we say the graph is right skewed. A right skewed graph is characterized by a tail that is to the right of the median. So the wrong choice would be the tail is to the left of the median because that would be left skewed.
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