When sewer and storm water drains are combined into a single system: correct answerssewage may enter waterways during storms
"The movement of products, money, information, and human talent around the world in ever larger quantities, at every lower costs, and in ever less time." What is it? corre...
6A characterizing data
what is the mean correct answersThe mean is the sum of all the values divided by the number of values. It can be strongly affected by outliers.
what is the median correct answersThe median is the middle value in a data set. It is not affected by outliers.
what is the mode correct answersThe mode is the most common value in a data set. It is not affected by outliers.
what are outliers correct answersAn outlier in a data set is a value that is much higher or much lower than almost all other values. An outlier can change the mean of a data set, but does not affect the median or mode.
what are two possible sources of confusion about the "average." correct answersTwo possible sources of confusion are not knowing whether the reported average is the mean or the median, and not having enough information about how the average was computed.
What do we mean when we say that a distribution is symmetric? Give a simple example of a symmetric distribution.
Give a simple example of a left-skewed distribution.
Give a simple example of a right-skewed distribution. correct answers- A single-peaked distribution is symmetric if its left half is a mirror image of its right half. - The heights of a sample of 100 women is a symmetric distribution.
- The speed of cars on a road where a visible patrol car is using radar to detect speeders is a left-skewed distribution.
- The number of books read during the school year by fifth graders is a right-skewed distribution.
What is meant by the variation of a distribution? Give a simple example of a distribution with different amounts of variation. correct answersVariation is how widely data values are spread out from the center of a data set.
The speeds of cars on a highway and passing through a busy intersection.
Decide whether the following statement makes sense or does not make sense . Explain your reasoning.
In a data set of 10 exam scores, in which no two people got the same score, the mean was equal to the score of the person with the third highest grade. correct answersThe statement makes sense because the data could be skewed towards the higher scores, causing the mean to be equal to the third highest grade.
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