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statuscvo [17]
1 year ago
12

Grace is looking at a report of her monthly cell-phone usage for the last year to determine if she needs to upgrade her plan. Th

e list represents the approximate number of megabytes of data Grace used each month.
700, 735, 680, 890, 755, 740, 670, 785, 805, 1050, 820, 750
What is the standard deviation of the data? Round to the nearest whole number.
Mathematics
1 answer:
Alisiya [41]1 year ago
6 0

Answer:

s ≈ 105

Step-by-step explanation:

<u>Given:</u>

  • The data set: 700, 735, 680, 890, 755, 740, 670, 785, 805, 1050, 820, 750

<u>To find:</u>

  • The standard deviation of the data

<u>Steps:</u>

To find the standard deviation, first write the computational formula for the standard deviation of the sample.

{s}= \sqrt{\frac{{\sum}{x^2} - \frac{({\sum}{x})^2}{n}}{n - 1}}

Take the square root of the answer found in step 7 above. This number is the standard deviation of the sample. It is symbolized by s . Here, we round the standard deviation to the nearest whole number.

{s} = \sqrt{10987.878787879} = 104.8231

Rounding to the nearest whole number:

s ≈ 105

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5 0
3 years ago
Why is the vertex of vertex form y=a(x-h)^2+k (h,k) rather than (-h,k)? If that was y=2(x-5)^2+6, the vertex would be at (5,6) w
Sindrei [870]

9514 1404 393

Answer:

  (5, 6) is (h, k)

Step-by-step explanation:

Vertex form is an instance of the transformation of parent function f(x) = x². It is vertically scaled by a factor of 'a', and translated so the vertex is point (h, k). That is, the transformed vertex is h units right and k units up from that of the parent function (0, 0).

Parent:

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__

When you compare the form to your specific instance, you need to pay attention to what it is that you're comparing. As the attachment shows, ...

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Hence the vertex is (h, k) = (5, 6). The second attachment shows this on a graph.

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strojnjashka [21]

Answer:

yes it is possible

I hope it's helps you

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gavmur [86]
You can use photo math
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