3 years ago

15 care plans audited; 2 missing. What is the percentage that are there?

1 answer:

5 0

2 out of 15 is 13.33333333, which is 13 1/3 so if you subtract 100 and 13 1/3 you get 86 2/3.

86 2/3% of the plans are there.

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My name is Ann [436]

25-9=16 so 16 is the answer

8 0

2 years ago

Help me find Sample variance and standard deviation

AnnZ [28]

First, find the mean. You'll need it to compute the variance.

$\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11$

The variance of the sample is then computed with the formula

$s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5$

The standard deviation is the square root of the variance, so

$s=\sqrt{35.5}\approx5.958$