Definitions
A line that minimizes the average distance from data in a scatter plot.
What is the line of best fit?
What is the slope of a line of best fit?
The formula for drawing a red king and a black odd number from a standard deck of cards without replacement.
2/52*10/51
Sufficiently large number for a sample in psychology research.
What is 30 participants?
When two or more events cannot occur together.
β
What is beta, the probability of making a Type 2 error?
The formula for the line of best fit.
What is y=bx+a?
95% of the time, this will include the true population mean.
What is a 95% confidence interval?
Deciding to retain the null hypothesis even though there was an effect.
What is a Type 2 Error?
P+Q
What is 2 mutually exclusive, exhaustive outcomes?
The formula for power.
What is 1-Beta?
Alex did a study and used a correlated groups t-test with an alpha of 0.05 and 16 participants. They found that their obtained t, 2.67, was larger than the critical t, 2.131. What is the probability that they made a type 1 error?
0.05
The number of data points that are free to vary without changing the statistic.
What are degrees of freedom?
σx̄
What is the standard error of the mean?
What is the formula for finding the probability of flipping 3 heads and 5 tails in 8 flips?
56(p^3)(q^5)
Alpha get's increased to this if you switch from a one-tailed test to a two-tailed test mid experiment.
What is 0.075 or 7.5%?
The probability that you will detect a present effect.
What is power?
sx̄1-x̄2
What is the estimated standard error of the mean for an independent groups t-test?
The formula for the standard error of the estimate.
Sqrt(SSy-((SCP)^2/SSx))/N-2)
If r=0, then the standard error of the estimate equals this.
What is the standard deviation of y?