Answer:
a. correlation
b. inverse linear correlation exists If the higher the population of students lead to a decrease in test score,
c. yes
Step-by-step explanation:
a. Correlation is a measure of the amount of association existing between two variables.
b. For linear correlation, if points are plotted on a graph and all the points lie on a straight line, then perfect linear correlation is said to exist. When a straight line having a positive gradient can reasonably be drawn through points on a graph positive or direct linear correlation exists,
Similarly,when a straight line having a negative gradient can reasonably be drawn through points on a graph, negative or inverse linear correlation exists,
The results of this determination give values of r lying between +1 and −1, where +1 indicates perfect direct Positive linear correlation and −1 indicates perfect inverse correlation or Negative linear correlation and 0 indicates that no correlation exists.
If the higher the population of students lead to a decrease in test score, there will definitely be a negative correlation between class size and test score. i.e low class size result in high test score which consequently lead to high performance.
c. YES
A negative correlation means low class size result in high test score which consequently lead to better performance.
Square root 320 can be factorised into root64 x root5, and root64 is 8, so the answer is 8root5
<span>A=P(1+rn)nt
A=200(1+.02)^3
A=200(1.02)^3
A=200(1.061208)
A=</span><span>212.2416
which u round to 212.24</span>
Answer:
9r+108
Step-by-step explanation:
9 times r, 9 times 12.
9r+ 12 times 9 equals 9r+108
Answer:
Nome of the above options are correct
x = 30° or 150°
Step-by-step explanation:
2 sinx - 1 = 0
2sinx = 1
sin x = (1/2)
x = sin⁻¹ (0.5) = 30°
But sin x is positive in the first and the second quadrant,
x = 30° or 150°
Hope this Helps!!!
