3 years ago

Question Progress

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

7 0

Answer:

don't know

poor in maths

You might be interested in

Please helppp me I need it now

Aleksandr [31]

Answer:

You can either choose B or D.

8 0

3 years ago

Read 2 more answers

A team is awarded 5 points and loses 3 points

Helga [31]

Answer:

They have 2 points

Step-by-step explanation:

2 points

5-3=2

3 0

3 years ago

7 7 (–1) = <br> a. 13 <br> b. 16 <br> c. 7 <br> d. 10

Mrrafil [7]

The answer would be d.

4 0

3 years ago

What statement is true about the mean of the sums of the two spinner

Amiraneli [1.4K]

Answer:

Are there any pictures or options?

5 0

4 years ago

QUESTION 3 of 10: Stock returns vary from year to year. The more variance a stock displays the greater the potential risk. These

Dahasolnce [82]

Answer:

The variance of these investment returns is 74

Step-by-step explanation:

Given:

Series = 10, 30, 15, 5, 20

To Find:

variance of a series = ?

Solution:

The variance of the series = $Var\left(X\right)=\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n}$

$\bar{x} = \frac{10+30 +5+15 + 20}{5}$

$\bar{x} = \frac{80}{5}$

$\bar{x} =16$

Now $(x_i -\bar{x})^2 =$ $(10 -16)^2 + (30 -16)^2 + (5 -16)^2 +(15 -16)^2 +(20 -16)^2$

= $(-6)^2 + (14)^2 + (-11)^2 + (-1)^2+ (-4)^2$

= 36 + 196 +121 + 1+ 16

= 370

Now

$Var\left(X\right)=\frac{370}{5}$ = 74

6 0

3 years ago

Read 2 more answers