For comparing the means of two separate groups, which is the best test?
Independent T-test
Chi-squared
Regression
ANOVA
What is a correlation co-efficient?
Has values from +1 to -1
Indicates how closely two variables are linked
All of the answers
The two variables are the independent and dependent
What type of test would be used to find a difference in the same individuals at two different times/conditions
Correlation
ANOVA
Time Series
Paired T test
What is a cluster sample?
Sampling technique where population is divided into clusters
A very large sample size
Samples from various populations
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: The Null Hypothesis is a statement there is no significant difference or effect in the research observations.
True
True or False: A parametric test is based on a normal distribution?
True
True or False. When p > α, you should fail to reject the Null hypothesis.
True
True or False: A discrete variable can only take on a finite number, such as the number of students in a class??
True
What type of test is used to find an association between two categorical variables?
Chi-Squared
Paired t test
ANOVA
Regression
What are Descriptive statistics?
Measures of central tendency
Graphs and charts to visually represent the data
Measure of variability (data spread)
All of the answers
What does a p-value represent in statistical tests?
The probability of the obtained results when null is true
The variance in the sample population
The sample mean
A significance level
True or False: A variable is a factor that can vary or change?
True
What does correlation between two variables mean?
The Extent to which 2 or more variable fluctuate together
A variable that is continuous
None of the answers
Two variables that can take on the same value
What is a Parameter?
A sample Statistic
A numerical characteristic of a population
A value below which a given percentage of observations fall
A value that divides a list of numbers into quarters
What is a Confidence Interval?
Provides a specified level of confidence for an estimate
All of the above
95% confidence interval, means 95 out of 100 times
Range of values likely to Include parameter of interest
What is an interval level of measurement?
None of the answers
Variable data that can only be categorized
Variable data that can only be ranked
Measurement where values between variables has meaning
What are examples of a categorical variable?
All the answers
Animal Species
Education level
Occupation
True or False: A Chi-square test assesses the differences between two categorical variables?
True
True or False: A continuous variable is a type of quantitative variable that can take on any value within a certain range of intervals?
True