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Vesna [10]
3 years ago
15

What is the square root of -1?

Mathematics
1 answer:
Neporo4naja [7]3 years ago
3 0

Answer:

i

I hope this helps!

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A measure of the strength of the relationship between two variables is referred to as the A. standard deviation of the estimate.
marin [14]

Answer:

D. Coefficient of Correlation

Step-by-step explanation:

The name itself "Coefficient of Correlation" involves the word correlation, meaning relationship between two things.  

The coefficient of Correlation is used to determine how strong a relationship is between two variables.

The formula of Coefficient of Correlation gives a value between -1 and 1. Moreover, it helps to plot a graph showing the strength of relationship.

1 : A strong positive relationship

-1: A Strong negative relationship

0: No relationship at all

One of the most used formula is Pearson Correlation Coefficient Formula, picture of which is attached. X and Y represent two different set of datas.

<u>Note: </u>

The other terms are defined as :

Coefficient of Determination : Square of correlation between predicted scores and actual scores. It usually ranges from 0 to 1 .

Standard deviation of estimate : represents the amount of variation among a set of values .

Standard Error of estimate : It is the measure of dispersion of sample means around population means.

6 0
3 years ago
What's evaluate cos(sin-1,0)
melisa1 [442]
Cos[sin⁻¹(0)]
cos(0)
1

cos[sin(-1)]
cos(-0.02)
0.99

cos[sin(0)]
cos(0)
1
5 0
3 years ago
Levi purchased a total of 50 ride and game tickets and the amusement park and spent $29. if ride tickets cost 75 cents each and
icang [17]
Levi purchased 16 ride tickets and 34 game tickets.
4 0
4 years ago
Read 2 more answers
The students at a High School earned money for an international animal rescue foundation. 82 seniors earned an average $26.75 pe
maks197457 [2]

Answer:

B. $16.13

Step-by-step explanation:

The Total Students= 82+74+96+99=351

Sum of earnings of 82 seniors = $26.75 x 82 = $ 2193.5

Sum of earnings of 74 juniors = $ 12.25 x 74 = $ 906.5

Sum of earnings of 96 sophomores = $15.50 x 96 = $ 1488

Sum of earnings of 99 freshmen= $ 10.85 x 99 = $ 1074.15

Total earnings = $2193.5 + $ 906.5 + $1488 + $ 1074.15 = $ 5662.15

( Total Earnings) ÷ (Total Students)

= $5662.15 ÷ 351

= $16.13

3 0
3 years ago
Read 2 more answers
1. A standard dice has 6 sides with the numbers 1-6 on it. What is the probability of rolling a 4 on a
Ksivusya [100]

Answer:

1/6

Step-by-step explanation:

There are six sides on a die and only one of them has a 4

P( 4) = number of sides with a 4/ total number of sides

        = 1/6

6 0
3 years ago
Read 2 more answers
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