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2 years ago

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The dot plot below shows the number of books 26 students read in a month: Is the median or the mean a better center for this dat

a and why?
A.Mean; because the data is skewed and there are outliers
B.Mean; because the data is symmetric and there are outliers
C.Median; because the data is skewed and there are outliers
D.Median; because the data is symmetric and there are outliers

1 answer:

Stella [2.4K]2 years ago

7 0

Answer:

B

Step-by-step explanation:

The data is symmetric, and the three 10 count as outliers.

Thank you! Have a nice day!

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Answer:

Either $\displaystyle \frac{-1522}{\sqrt{41}}$ (approximately $-238$ ) or $\displaystyle \frac{1522}{\sqrt{41}}$ (approximately $238$ .)

Step-by-step explanation:

Let $a$ denote the first term of this geometric series, and let $r$ denote the common ratio of this geometric series.

The first five terms of this series would be:

$a$ ,
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Second equation:

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Rewrite and simplify the first equation.

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Therefore, the first equation becomes:

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Similarly, rewrite and simplify the second equation:

$\begin{aligned}&a\, r^3 - a\, r\\ &= a\, \left( r^3 - r\right) \\ &= a\, r\, \left(r^2 - 1\right) \end{aligned}$ .

Therefore, the second equation becomes:

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Simplify and solve for $r$ :

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