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Задача Задача №1591403
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Аноним
23 сентября 2024 11:50 · публичный вопрос
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Аноним

Data set X: 5, 9, 9, 13 Data set Y: 5, 9, 9, 13, 27 The lists give the values in data sets X and Y. Which statement correctly compares the mean of data set X and the mean of data…

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Data set X: 5, 9, 9, 13 Data set Y: 5, 9, 9, 13, 27 The lists give the values in data sets X and Y. Which statement correctly compares the mean of data set X and the mean of data set Y? A) The mean of data set X is greater than the mean of data set Y. B) The mean of data set X is less than the mean of data set Y. C) The means of data set X and data set Y are equal. D) There is not enough information to compare the means.

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23 сентября 2024 11:50

To compare the means of data sets X and Y, we need to calculate the mean for each data set.

Data set X:
Values: 5, 9, 9, 13
Mean (X) = (5 + 9 + 9 + 13) / 4
Mean (X) = 36 / 4
Mean (X) = 9

Data set Y:
Values: 5, 9, 9, 13, 27
Mean (Y) = (5 + 9 + 9 + 13 + 27) / 5
Mean (Y) = 63 / 5
Mean (Y) = 12.6

Now we can compare the two means:

  • Mean (X) = 9
  • Mean (Y) = 12.6

Since 9 < 12.6, we find that:

B) The mean of data set X is less than the mean of data set Y.