Term
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Definition
| A summary number that is based on a combination of all the values in a population data set is called a(n) _____. |
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Term
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Definition
| You square every value in a sample data set. Then you find the mean of all these new values. Because this summary number you come up with is based on a sample data set, it is called a(n) _____. |
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Term
statistic
(sample, statistic) |
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Definition
| A(n) _____ is a numerical description of a sample characteristic. |
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Term
parameter
(population, parameter) |
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Definition
| A(n) _____ is a numerical description of a population characteristic. |
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Term
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Definition
| Each of the equal-width intervals that result when you subdivide the range of a data set for the purpose of creating a frequency distribution is referred to as a(n) _____. |
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Term
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Definition
| A data set has a range of 225. You decide to break up that range into 9 intervals that are 25 units wide. Each such interval is called a(n) _____. |
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Term
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Definition
| The number of observations that fall within the limits of a given class is called the _____ of that class. |
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Term
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Definition
| A data set that contains 225 values has been broken into 9 intervals with width 25. One interval contains 17 data values. 17 is the _____ for that interval. |
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Term
| relative frequency (example) |
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Definition
| A data set that contains 37 values has been broken into 8 intervals with width 5. One interval contains 11 data values. Dividing 11 by 37 yields .30 (rounded to two decimal places). So .30 is the _____ for that interval. |
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Term
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Definition
| The number of observations that fall within the limits of a given class divided by the total number of observations in the data set is called the _____ of that class. |
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Term
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Definition
| The sum of the frequencies for a class and all the "preceding" classes is called the _____ of that class. |
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Term
| cumulative frequency (example) |
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Definition
| The classes for a distribution have the following frequencies: 1, 1, 3, 4, 5, 6, 4, 2, 1, 1. If you add the frequencies of the first four classes, you get 9, which is the _____ of the fourth class. |
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Term
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Definition
| A bar graph of a frequency distribution in which the height of each bar represents the how many values fall into the corresponding class is called a(n) _____. |
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Term
| frequency histogram (example) |
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Definition
The graph pictured here is called a(n) _____.
[image] |
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Term
| measure of central tendency |
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Definition
| A(n) _____ is a value that represents a typical, or central, entry of a data set. |
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Term
| measures of central tendency (example) |
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Definition
| The mean, median and mode are all _____. |
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Term
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Definition
| The sum of the values in a data set divided by the number of values or observations in a data set is referred to as the _____ of the data set. |
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Term
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Definition
| The sum of the 17 values in a data set is 323. So 19 is the _____ of the data set. |
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Term
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Definition
| In the data set 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, the _____ is 6. |
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Term
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Definition
| The value that lies in the middle of the data when the data set is ordered is called the _____. |
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Term
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Definition
| The _____ is the data entry that occurs with the greatest frequency. |
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Term
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Definition
| In the data set 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, the _____ is 1. |
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Term
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Definition
| A distribution is _____ if two entries occur with the same greatest frequency. |
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Term
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Definition
| The distribution 12, 12, 12, 13, 13, 14, 15, 15, 16, 16, 16 is _____ because 12 and 16 occur with the same, greatest frequency. |
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Term
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Definition
| A(n) _____ is a data value that is much smaller or much larger than other data values in a data set. |
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Term
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Definition
| 37 is a(n) _____ in the data set 11, 11, 12, 12, 12, 13, 13, 14, 37 because it is much greater than the other values in the data set. |
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Term
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Definition
| A(n) _____ appears in a data set when no data values fall into one or more classes. |
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Term
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Definition
Because no values fall in the class that stretches from 2.5 to 3, we say that data has a(n) _____.
[image] |
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Term
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Definition
| A frequency distribution is _____ when a vertical line can be drawn through the middle of a graph of the distribution and the resulting halves are approximately mirror images. |
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Term
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Definition
The shape of the histogram below can be described as _____.
[image] |
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Term
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Definition
A frequency distribution is _____ when all entries, or classes, in the distribution have equal or approximately equal frequencies. |
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Term
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Definition
The shape of the histogram below can be described as _____.
[image] |
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Term
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Definition
| A frequency distribution is _____ or "negatively skewed" if the ""tail"" of the graph elongates more to the left than to the right. |
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Term
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Definition
The shape of the histogram below can be described as _____.
[image] |
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Term
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Definition
| A frequency distribution is _____ or "positively skewed" if the ""tail"" of the graph elongates more to the right than to the left. |
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Term
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Definition
The shape of the histogram below can be described as _____.
[image] |
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