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3 years ago

Do i calculate standard deviation for sample or population

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

8 0

Answer:

A sample standard deviation is a statistic. This means that it is calculated from only some of the individuals in a population. Since the sample standard deviation depends upon the sample, it has greater variability. Thus the standard deviation of the sample is greater than that of the population

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Pls help i dont understand :( will give Brainliest + 25 Points

umka21 [38]

It’s D. 4 is the one next to X because that’s what is changing and -3 is the y intercept which comes after X

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4 years ago

Read 2 more answers

Which expression is equivalent to (7^3)^-2? (4 points) 1/7^6 7 1/7 -1/7^6

murzikaleks [220]

Answer:

Step-by-step explanation:

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3 years ago

Dollar is worth three and 3 1/2 kruneros. What is the value of 43 3/4 kruneros?

Korvikt [17]

Question:

One dollar is worth 3 1/2 kruneros. What is the value of 43 3/4 kruneros?

Answer:

The value of $43\frac{3}{4}$ kruneros is 12.5 dollars

Solution:

Given that,

Dollar is worth three and 3 1/2 kruneros

Which means,

$1 \text{ dollar } = 3\frac{1}{2} \text{ kruneros }\\\\1 \text{ dollar } = 3.5 \text{ kruneros }$

We have to find the value of $43\frac{3}{4}$ kruneros

Let us convert the mixed fractions to improper fractions

Multiply the whole number part by the fraction's denominator.

Add that to the numerator.

Then write the result on top of the denominator.

$43\frac{3}{4} = \frac{43 \times 4 + 3}{4} = \frac{175}{4} = 43.75$

So we have to find the value of 43.75 kruneros

Let "x" be the value of 43.75 kruneros

Then,

1 dollar = 3.5 kruneros

x dollar = 43.75 kruneros

This forms a proportion and we can solve the sum by cross multiply

$1 \times 43.75 = x \times 3.5\\\\x = \frac{43.75}{3.5}\\\\x = 12.5$

Thus value of $43\frac{3}{4}$ kruneros is 12.5 dollars

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3 years ago

5% of 40 pounds working out calculating the given percentage of a number

garri49 [273]

Answer:

5% of 40 is 2, 50% of fourth is twenty and so on.

Step-by-step explanation:

To get my ander which ios two i multiplied 5% x 40, the answer is 2.

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3 years ago

Simplify (9 + 7i)/(-10 + 8i)

Vera_Pavlovna [14]

Multiply numerator and denominator by the conjugate of the denominator

Denominator: -10 + 8i
Conjugate of the denominator: -10 - 8i

Operation:

[9 +7i] / [-10 + 8i] * [-10 -8i] / [-10 - 8i] = [-90 - 72i - 70i +56] / [100 + 64] =

[-34 -142i] / 164 = [-17 -71i] / 82

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3 years ago