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100,90,85, 90,80,75,80.90.

Rearrange the terms in rank order.

75,80,80,85,90,90,90,100.

MEAN :

Add all the terms together and divide by the number of terms.

Hence:- (75+80+80+85+90+90+90,+100)/8 =>

690/8 = 86.25

MEDIAN :

Is the Absolute middle term. Since there are an even number of terms, we take the two middle terms, which are 85 & 90. (NB This leaves three terms to the left of '85' and three terms to the right of '90'. ). Add these two terms and divide by '2'.

Hence (85+90) / 2 = 87.5

MODE :

Is the most frequent term. The one term that appears most often. In this case it is '90', as there are three lots of '90', but only two lots of 80, and only one each of the remaining terms. = 90.

.

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lenpollock

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9y ago

Mean: 86.25

Median: 87.5

Mode: 90

Range: 25

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Q: What are the mean median mode and range of 100 90 85 90 80 75 80 90?
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