Big Ideas Math Geometry, 2014
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Big Ideas Math Geometry, 2014 View details
1. Conditional Statements
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Exercise 60 Page 74

Practice makes perfect
a The mean of a data set is the average of the numbers. Therefore, if x and y are the least and greatest of the values in the data set, the average will necessarily be between them. This means the statement is true.
b The converse of a conditional statement, q→ p, exchanges the hypothesis and the conclusion of the conditional statement.

If the mean of the data is between $x$ and $y$, then $x$ and $y$ are the least and greatest value in your data set. This is not true, as there could be other values that are either lower or greater than x and y in the data set.

c To copy and complete the statement, we need to understand the meaning of a mean, median and mode.
  • The mean is the average value of a data set.
  • The median is the middle value of a data set
  • The mode is the most occurring value of a data set.

All data sets will have a mean and a median no matter what they look like. However, if a data set has a mode, one value has to necessarily occur more times than any other value in the data set. Therefore, if a data set has a mode, then the mode of the data set will always be a data value. &If a data set has a mean, median and a &mode, then the mode of the data set &will always be a data value.