Statistical distribution Flashcards
1
Q
define hypothesis test
A
a statement made about the value of a populations parameter. Hypothesis test uses a sample to determine whether of not to reject the hypothesis
2
Q
What is the critical value
A
the first value to fall into the critical region
3
Q
what is the acceptance region
A
a region where we accept the null hypothesis
4
Q
How can a pmcc close to zero show a relationship between two variables
A
a non linear relationship between the two variables
5
Q
why would the standard deviation decrease
A
If the new measurement is near the mean and the data becomes more concentrated
6
Q
When does the data’s mean not change when adding new data
A
When the new data is equal to the mean
7
Q
what does tr stand for?
A
traces = small amounts
8
Q
how do you input tr into calculator
A
use as 0
9
Q
A
