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14. The mode of the data set is 21. What number is missing?


21, 17, _, 25, 23, 13




19. The mean of the data set is 18. What number is missing?


21, 11, _, 27, 22, 13, 16




20. The median of the data set is 81. What number is missing?


82, 87, _, 77, 70, 80, 88

Respuesta :

SmarticalParticals
14. The mode is the number in a data set that happens most frequently. Since we have a 21 and the mode is 21 then the missing number has to be 21.

19. The mean is the average of all the data in the set. That means...

(X+21+11+27+22+13+16)÷7= 18

X + 110/7 = 18
X + 110 = 126
X = 16

The missing number is 16

20. The median is the central number in a data set. Put the numbers in order...

70, 77, 80, __, 82, 87, 88

It tells us that 81 is the median, so that has to be the missing number because it fits as the central number (the middle number in the data set). There are 3 numbers before it and after it.

Missing number is 81

akposevictor

14. The missing number would be 21, which makes the 21 the mode.

19. The missing number of the data set with a mean of 18 is: 16.

20. The missing number would be 81, which is the median.

What is the Mode, Mean, and Median of a Data?

The mode is the data point that appears the most in a data set.

The median is the middle value or average of the middles values in a an ordered data set.

The mean is the average value of the data set.

14. The missing number would be 21, which makes the 21 the mode.

19. Mean = (21 + 11 + x + 27 + 22 + 13 + 16)/7 = 18

110 + x/7 = 18

110 + x = (18)(7)

110 + x = 126

x = 126 - 110

x = 16

Therefore, the missing number of the data set with a mean of 18 is: 16.

20. Let the missing number be x, then order the data set:

70, 77, 80, x, 82, 87, 88

The missing number would be 81, which is the median.

Learn more about the Mode, Mean, and Median of a Data on:

https://brainly.com/question/542771

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