A tabular summary of categorical data set showing the number of observations that fall into each of several collectively exhaustive and mutually exclusive classes is called a bar chart.
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Q. 2A bag contains nickels, dimes, and quarters (more than two of each). Two coins are randomly selected and their total value in cents is noted. Find the possible values of the random variable x.
Q. 3Groupings of data, created to enhance an understanding of them, usually by making the groups collectively exhaustive and mutually exclusive are called classes or categories.
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Q. 4A bag contains nickels, dimes, and quarters (more than two of each). Two coins are randomly selected and their total value is noted. Describe what the random variable x represents.
Q. 5Persons or objects on which an experiment is performed are called experimental units.
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Q. 6Classify the following as discrete or continuous random variables: A pair of dice is rolled, and the sum to appear on the dice is recorded.
Q. 7A continuous quantitative variable is one that can assume values at all points on an interval of values, with no gaps between possible values.
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