What is a cluster sample?
Sampling technique where population is divided into clusters
Samples from various populations
A very large sample size
A sample from a non-normal distribution
Since p (.04) < a (.05), p < α, do we accept or reject the null hypothesis?
We reject the null hypothesis
True or False. When p > α, you should fail to reject the Null hypothesis.
True
What does correlation between two variables mean?
The Extent to which 2 or more variable fluctuate together
None of the answers
Two variables that can take on the same value
A variable that is continuous
What is a Parameter?
A sample Statistic
A value that divides a list of numbers into quarters
A numerical characteristic of a population
A value below which a given percentage of observations fall
What does a p-value represent in statistical tests?
A significance level
The variance in the sample population
The sample mean
The probability of the obtained results when null is true
For comparing the means of two separate groups, which is the best test?
Independent T-test
Regression
Chi-squared
ANOVA
What is a Confidence Interval?
95% confidence interval, means 95 out of 100 times
Provides a specified level of confidence for an estimate
Range of values likely to Include parameter of interest
All of the above
True or False: A variable is a factor that is liable to vary or change?
True
True or False: A Chi-square test assesses the differences between two categorical variables?
True