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vagabundo [1.1K]
2 years ago
15

The data to represent average test scores for a class of 16 students includes an outlier value of 78. If the mean, including the

outlier of 78, equals 84, which statement is always true about the new data when the outlier is removed?
The mean would increase.
The mean would decrease.
The median would increase.
The median would decrease.
Mathematics
2 answers:
monitta2 years ago
8 0

Answer:

Given that The data to represent average test scores for a class of 16 students includes an outlier value of 78.

We can find sum of all 16 test scores = 84(16) = 1344

Outlier found = 78

If outlier is removed new sum = 1344-78 = 1266

Number of entries without outlier = 15

New average = 1266/12 =84.4

We find that average of new data increases.

Also whenever we remove outlier std deviation also would be reduced.

Step-by-step explanation:

Karolina [17]2 years ago
6 0

Answer:

The mean would decrease.

Step-by-step explanation:

Without the outlier, the mean decreases. The median stays the same with or without the outlier.

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Answer:

A) amount of snowfall in a blizzard  

Step-by-step explanation:

Both continuous and discrete data are quantitative.

The difference is that  

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The amount of snowfall in a blizzard is continuous data.  It can take any value such as 100.3 cm or 250.5 cm .

B) is wrong. The number of students who pass a math quiz is discrete data. You can't have half a student.

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D) is wrong. The number or treadmills in a gym is discrete data. You can't have half a treadmill.

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3 years ago
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Step-by-step explanation:

x = # of t-shirts

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x = 28

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Given:

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To find:

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Area of the old growth trees = 0.2% of 43,000

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