Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
someone please help I am stuck on the last two
I have no idea how to find when the particle is moving in the positive direction
![Entered
Answer Preview
Result
3*(t^2)-14*t+2
3t2 – 14t + 2
correct
-13
-13
correct
0.1476
0.1476
correct
4.519
4.519
correct
2
incorrect
-7
-7
incorrect
At least one of the answers above is NOT correct.
(1 point) A particle moves according to the law of motion s(t) = t3 – 7t? + 2t, t > 0, where t is
measured in seconds and s in feet.
a.) Find the velocity at time t.
Answer: 3t^(2)-14t+2
b.) What is the velocity after 3 seconds?
Answer: -13
c.) When is the particle at rest? Enter your answer as a comma separated list. Enter None if the
particle is never at rest.
At ti = 0.1476
and t2 = 4.519
with ti < t2.
d.) When is the particle moving in the positive direction?
When 0 <t < 2
and t> -7
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