Answer:
In an experimental study looking at classical music exposure and reading ability in children, the researcher divided the children into two groups (Groups A and B
The circumference would be 53.38 because the formula on finding the circumference is pi times the diameter.
The variance is the total of the squared distances of the given data from the mean.
This can be calculated through the equation,
σ² = summation of X² / N - μ²
where σ² is the variance X's are the data, N is the number of terms, and μ is the mean.
summation of X² = 100² + 100² + 120² + 120² + 180² = 81200
N = 5
μ = (100 + 100 + 120 + 120 + 180) / 5
μ = 124
Substituting these values to the equation for variance,
σ² = (81200/5) - 124² = 864
Thus, the variance is equal to 864.
Answer:
A.
Step-by-step explanation:
for (10,5)
5 - 5 = 2(10 - 10) = 0
for (4,-7)
-7 - 5 = 2(4 - 10) = -12
Answer:
64
Step-by-step explanation:
he's 64 inches tall
- multiply 12 by 5, which is 60
- then add four, 60 + 4 = 64
