All categories

2 years ago

2x2= 3x5= 8nsjddjdkdjd

Mathematics

2 answers:

Svetllana [295]2 years ago

6 0

Answer is 19

Step-by-step explanation:

Ne4ueva [31]2 years ago

5 0

Answer:

What??

Step-by-step explanation:

You might be interested in

Is a ratio always a rate?

kari74 [83]

No it is not always a rate that was easy

5 0

2 years ago

Read 2 more answers

Need help on this question

Vedmedyk [2.9K]

Answer:

angle 4

Step-by-step explanation:

7 0

3 years ago

Need help pls<br>thank you in advance

ira [324]

Answer:

<u />

$\textsf{Mean}\:\overline{X}=\sf \dfrac{\textsf{sum of all the data values}}{\textsf{total number of data values}}$

$\implies \sf Mean\:(Nilo)=\dfrac{5+6+14+15}{4}=\dfrac{40}{4}=10$

$\implies \sf Mean\:(Lisa)=\dfrac{8+9+11+12}{4}=\dfrac{40}{4}=10$

<h3><u>Standard Deviation</u></h3>

$\displaystyle \textsf{Standard Deviation }s=\sqrt{\dfrac{\sum X^2-\dfrac{(\sum X)^2}{n}}{n-1}}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Nilo)} & =\sqrt{\dfrac{(5^2+6^2+14^2+15^2)-\dfrac{(5+6+14+15)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{482-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{82}{3}}\\\\& = 5.23\end{aligned}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Lisa)} & =\sqrt{\dfrac{(8^2+9^2+11^2+12^2)-\dfrac{(8+9+11+12)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{410-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{10}{3}}\\\\& = 1.83\end{aligned}$

<h3><u>Summary</u></h3>

Nilo has a mean score of 10 and a standard deviation of 5.23.

Lisa has a mean score of 10 and a standard deviation of 1.83.

The <u>mean</u> scores are the <u>same</u>.

Nilo's standard deviation is higher than Lisa's. Therefore, Nilo's test scores are more <u>spread out</u> that Lisa's, which means Lisa's test scores are more <u>consistent</u>.

5 0

1 year ago

Hello look below please

olchik [2.2K]

Answer:

it is 1

Step-by-step explanation:

i think

6 0

2 years ago

Read 2 more answers

When does the price of an item increase?

Mrrafil [7]

Answer:

Step-by-step explanation:

Tell me if you need an explanation

3 0

3 years ago

2x2= 3x5= 8nsjddjdkdjd​

2x2= 3x5= 8nsjddjdkdjd