Answer:
r = 0.9
Step-by-step explanation:
Correlation is denoted by r. r² is usually used to measure variation along the line as a fraction of the total variation.
We are told class attendance explained 81% of the variation in grade index among the students. Thus, for this regression, the variation is;
r² = 81%
Or r² = 0.81
Thus, the numerical value of the correlation r would be;
r = √0.81
r = 0.9
For number 25 it’s x=4 and for 26 it’s x=7
Answer:
x = 11
Step-by-step explanation:
The Frequency column has to total 50 ( number of rolls on dice )
Thus total the given frequencies and equate to 50, that is
12 + 8 + 7 + 3 + 9 + x = 50
39 + x = 50 ( subtract 39 from both sides )
x = 11
D. v = 15.00n
Since there each n is worth 15.00, we multiply n by 15.00 to find the total value, v.
Answer:
Step-by-step explanation:
To find which systems of equation represents the situation, we can break down the key information and create two variables:
<u>Variables:</u>
Let 
= number of sundaes sold.
Let 
= number of banana splits sold.
<u>Given information:</u>
Sundae: 
Banana Splits: 
8 more sundaes sold than banana splits. This can be expressed by 
.
Total sold was 
. This can be expressed as 
.
∴ The systems of equation that expresses this situation are and .
Hope this helps :)
