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3 years ago

Help please I give brainliest

Mathematics

2 answers:

fenix001 [56]3 years ago

7 0

Answer:

No association

Step-by-step explanation:

The average tempature decreases while the sales of snow-cones increase

gregori [183]3 years ago

3 0

Answer:

I think its no association because the snow cone doesn't really tell you anything you can have a snow cone at any time of day

Step-by-step explanation:

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Find the standard deviation of 21, 31, 26, 24, 28, 26

Vesnalui [34]

Given the dataset

$x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}$

We start by computing the average:

$\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26$

We compute the difference bewteen each element and the average:

$x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}$

We square those differences:

$(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}$

And take the average of those squared differences: we sum them

$\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69$

And we divide by the number of elements:

$\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5$

Finally, we take the square root of this quantity and we have the standard deviation:

$\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39$

8 0

3 years ago

Will mark brainliest for whoever answers

Ostrovityanka [42]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Help me please I need an answer asap

Sergio [31]

Answer:

c option

Step-by-step explanation:

please mark me brainliest and 5 star

3 0

3 years ago

In the bleachers at the basketball game, 1/4 of the fans are adult men,and 5/12 are adult women. What fraction of the fans are a

Vera_Pavlovna [14]

4/12 of the fans are kids because 1/4 can be multaplied by 3 to get 3/12

3 0

3 years ago

You randomly draw a marble from a bag, record its color, and then replace it. You draw a red marble 3 out of 20 times. What is t

liraira [26]

Fraction: 9/100

Decimal: 0.09

Percentage: 9%

4 0

2 years ago