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A little help here? And can anyone explain this?

A little help here? And can anyone explain this?-example-1
User Weegee
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2 Answers

22 votes
22 votes
The right answer is D
User Jackilyn
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13 votes
13 votes

Answer:


D.

Explanation:


According to the dot plot,


3 students spend 0.5 minutes brushing their teeth.


2 students spend 1.5 minutes brushing their teeth.


1 student spends 2.5 minutes brushing their teeth.


2 students spend 3.5 minutes brushing their teeth.


1 students spend 4 minutes brushing their teeth.



So, the number set will be: {0.5, 0.5, 0.5, 1.5, 1.5, 2.5, 3.5, 3.5, 4}


Median: The middle number in a set that is ordered from least to greatest.


In this example, the median is 1.5


Mean: The sum of all values divided by the number of values.

In this set there are 9 values so we’ll divide the sum by 9

In this example, the mean would be:

(0.5 + 0.5 + 0.5 + 1.5 + 1.5 + 2.5 + 3.5 + 3.5 + 4) ÷ 9

18 ÷ 9 = 2


If we compare the mean to the median we can see that the mean is greater because 2 > 1.5


User RogerMKE
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2.8k points