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STALIN [3.7K]
3 years ago
5

Why do we use standard deviation?​

Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer:

used to tell how measurements for a group are spread out from the average (mean or expected value). ... Standard deviation is also useful in money, where the standard deviation on interest earned shows how different one person's interest earned might be from the average.

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The first blank is EF
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3 years ago
A bag contains a total of 100 black and white marbles. Without looking a marble is chosen, recorded, and placed back in the bag.
8_murik_8 [283]
80 black and 20 white
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3 years ago
You rolled a die 50 times. Your results are shown in the table below.
olya-2409 [2.1K]

Answer:

your question was not understandable but I think I understand what you wanted to ask (hopefully)

providing that the die is not loaded, the probability is 1/6

if instead you refer to the results then it is 1/5 as 10/50 = 1/5 in this case it's a matter of statistics, not probability, probability is used to estimate something that has not yet happened

Step-by-step explanation:

laws that can be applied to big numbers cannot be applied to small numbers

e.g. if you roll a die 10 times and you get nine times 5, you cannot say the die is loaded, if you roll it 1000 times and you get 990 times 5, then there is a high probability that it's a loaded die

5 0
4 years ago
Sarita showed the steps to solving the equation. 5 (x minus 3) + 7 (x + 4) = 73 Steps Sarita's Solution Sarita's Verification 1
valentinak56 [21]

Answer:

Sarita’s solution is correct. She made an error in her verification. Sarita was supposed to add the 5 and 7 in the first step.

Step-by-step explanation:

Given the following equation:

The steps to solve it are:

5(x-3)+7(x+4)-73

1. Apply the Distributive property:

5x-15+7x+28=73

2. Add the like terms:

12x+13=73

3. Subtract5 13 from both sides of the equation:

12x+13-(13)=73-(13

12x=60

4. Divide both sides of the equation by 12:

12r/12 = 60/12

x = 5

To verify it, let's substitute  into the equation:

5(5-3)+7(5+4)=73

Evaluating, we get:

5(2)+7(9)=73

10+63=73

73=73

Based on this, we can determine that Sarita's solution is correct, but she made an error in her verification (Observe that 5-3 is not equal to -2 )

4 0
3 years ago
Read 2 more answers
Roger drives 256km and uses 20l of fuel. what is his average fuel consumption for 100km?
Bezzdna [24]

Answer:

7. 8125 l

Step-by-step explanation:

256 km ....... 20l

100 km ...........x l

x = 100×20/256

= 7. 8125 l

3 0
4 years ago
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