Find Min, Max, Mean, Median, Range, Variance, Standard Deviation, Coefficient of Variance, Midrange, and Summation of X and X^2
Give a set of indivdiual or grouped data values to find a large array of stat values: summation of X, summation of X^2, n, minimum X, maximum X, mean, median, range, midrange, variance, standard deviation, and coefficient of variance.
Find-Stats-From-Sample-Data Program Walkthrough #1:
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From a set of sample data values, choose individual or grouped. In this example, “individual values” is chosen.
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The number of values in the set is given here. In this case, there are five.
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Input the first individual value in the set.
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Input the second individual value in the set. Notice that the first value remains so that you don’t get lost in a potentially long list of values.
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Input the third individual value in the set. Notice that the previous values remain so that you don’t get lost in a potentially long list of values.
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Input the fourth individual value in the set. Notice that the previous values remain so that you don’t get lost in a potentially long list of values.
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Input the fifth individual value in the set. Notice that the previous values remain so that you don’t get lost in a potentially long list of values.
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From the given data values, the summation of X, summation of X^2, n, minimum X, and maximum X are calculated.
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From the given data values, the mean, median, range, midrange, variance, standard deviation, and coefficient of variance are calculated. Note that the previous screen gave the values necessary for showing work to get this set of stat values.
Find-Stats-From-Sample-Data Program Walkthrough #2:
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In this case, “grouped data” is chosen. Grouped data are sets of classes of data values. Let’s say that you interviewed 30 people from ages 18-45. Each one of them was married and had children. You wanted analyze marital status by age group, so you broke down the data into classes of 18-24, 25-31, 32-38, and 39-45.
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There are four age groups, or, in other words, there are four classes.
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Their responses were this: In the 18-24 group, there were five; in the 25-31 group, there were 13; in the 32-38 group, there were seven; in the 39-45 group, there were five. But to analyze this data, you must use the midpoint of each class and not the class limits.
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Input the midpoint of the class. In this case, you take 18 and 24 and divide them by two. Then, enter the frequency of the class. In this case, there were five people in the 18-24 age group that were married and had children.
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Input the midpoint of the class. In this case, you take 25 and 31 and divide them by two. Then, enter the frequency of the class. In this case, there were 13 people in the 25-31 age group that were married and had children. Notice that the previous values are displayed to prevent mistakes in entries.
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Input the midpoint of the class. In this case, you take 32 and 38 and divide them by two. Then, enter the frequency of the class. In this case, there were seven people in the 32-38 age group that were married and had children. Notice that the previous values are displayed to prevent mistakes in entries.
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Input the midpoint of the class. In this case, you take 39 and 45 and divide them by two. Then, enter the frequency of the class. In this case, there were five people in the 39-45 age group that were married and had children. Notice that the previous values are displayed to prevent mistakes in entries.
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From the given data values, the summation of X, summation of X^2, n, mean, variance, standard deviation, and coefficient of variance are calculated.
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