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kobusy [5.1K]
3 years ago
7

May i please have some help

Mathematics
1 answer:
fomenos3 years ago
3 0

Answer: Help with what

Step-by-step explanation:1 + 1 = 2

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A sample of n = 5 scores has a mean of m = 8. one new score is added to the sample and the new mean is calculated to be m = 9. w
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If the 5 scores have a mean of 8, then their total sum would be 8*5 = 40

Now if one score if added (let's call this score x), there are 6 scores and the mean changes to 9, thus:
(40 + x)/6 = 9
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Here are two datasets:
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Answer:

Option a) Mean

Mean is affected a lot by the change in the last observation as the median remains the same.

Step-by-step explanation:

we are given the following in the question:

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Data set B: 64, 65, 66, 68, 70, 71, 720

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For data set B:

Formula:

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{1124}{7} = 160.57

Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}

Sorted data:

64, 65, 66, 68, 70, 71, 720

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As seen mean is affected a lot by the change in the last observation as the median remains the same.

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3 years ago
What is the value of x?
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Answer:

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Step-by-step explanation:

Each angle of the equilateral triangle is 60°.

  (2x -4)° = 60°

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__

  5y° = 60°

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What is the better buy? 1.50 for 5 oz 1.20 for 3 oz
lyudmila [28]
I think the better buy is the 1.50 for 5oz
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3 years ago
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