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Oxana [17]
4 years ago
8

Converting observations from original values to standard deviation units is known as

Mathematics
1 answer:
Tju [1.3M]4 years ago
5 0
Converting observations from original values to standard deviation units is known as standardizing the data values. This is done in order to get values in such a form where we can compare them. For example, if we have the test scores of two different school and we want to compare the result of the students we have to first convert them into standard deviation units.

Converting the values to standard deviation units is also known as converting the values to z scores.

The formula for the z score is:

[tex]z= \frac{x-u}{s} [/tex]

where x is the data value, which is to be standardized.
u is the average of the entire data.
s is the standard deviation of the data.
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Aria studied the traffic trends in India. She found that the number of cars on the road increases by 10% each year. If there wer
denpristay [2]

Answer:

8,800,000cars

Step-by-step explanation:

Given the initial amount of cars = 80,000,000

If there is 10 % increase in the first year;

Increment = 10% of 80,000,000

Increment = 0.1 * 80,000,000

Increment = 8,000,000

Amount of car in year 2 = 80million + 8million = 88million

Year3;

Amount of car in year 3 = 88,000,000+(10%of88million)

Amount of car in year 3 = 88,000,000+8,800,000

Amount of car in year 3 =96,800,000

Differences in the number of cars = 96,800,000 - 88,000,000

Differences in the number of cars = 8,800,000cars

<em>Hence there are 8,800,000cars in years 3 than year 2</em>

7 0
3 years ago
If x is a number that is 7 more than y, how do you express x as a function of y
Soloha48 [4]
x=y+7
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5 0
3 years ago
HELP PLEASE WILL MARK BRAINLIEST
ankoles [38]
The answer is D because on the x axis the number is 8 and on the y axis the number is -8
3 0
4 years ago
Read 2 more answers
5. Write x^2 + 8x = -4y - 8 in standard form. Identify the vertex, focus, axis
nikitadnepr [17]

Answer:

The answer to your question is:

Step-by-step explanation:

Data

                                             x² + 8x = -4y - 8

                                             x² + 8x + 16  = -4y - 8 + 16

                                             x² + 8x + 16  = -4y + 8

                                             (x + 4)² = -4(y - 2)

                                             (x + 4)² = 4(-1)(y - 2)

Vertex = (-4, 2)

p =  1

Focus = (-4, 1)

Axis of symmetry  x = -4

Directrix      y = 3

4 0
3 years ago
Complete the table<br> 28 to 4<br> __ to 3<br> 70 to __
Elza [17]

Answer:

21 to 3

70 to 10

Step-by-step explanation:

28÷7 = 4

21÷7 = 3

70÷7 = 10

8 0
3 years ago
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