correlation
what type of relationship is .3?
moderate
What is Mode, Median, Mean?
Mode is the most frequently occurring value.
The median is defined as the midpoint in a set of scores. It’s the point at which ½,/50%, of the scores fall above, & ½,/50%, fall below.
Mean is the middle point in a set of values
No relationship between variables.
null
What is n?
sample size
What is the mode of this data set?
1, 3, 5, 3, 4, 3
3
what type of relationship is .2?
weak or moderate
what is a sample and a population?
A sample is a subset of a population. A population is all of the occurrences with a certain characteristic.
Written using Roman symbols.
research
What is X?
Each individual score.
What are the 5 steps to a hypothesis test?
1. What are the research and null hypotheses?
2. What are the assumptions (x, y, level of measurement, assumption of distribution?)
3. What test(s) will you be using?
4. What is the computed value(s)? What is the critical value(s)? What is the significance level (.05)?
5. What do your results mean?
strong relationship
Explain Descriptive Statistics and Inferential Statistics.
Descriptive Statistics: Used to organize and describe the characteristics of a particular data set.
Inferential Statistics: Used to make inferences based on a smaller group of representative data.
Refers to the sample.
research
What is M?
Mean.
What is a Bivariate correlation?
Two variables.
what type of relationship is .4?
moderate to strong
What is Research and Null Hypotheses?
Null hypotheses refer to populations and are written in Greek symbols.
Research hypotheses refer to samples and are written in Roman symbols.
Implied hypothesis.
null
What is s?
Standard Deviation
What are the three most common measures of variability?
Range, Standard deviation and Variance.
what type of relationship is 0 to .1?
weak or none
Explain Nominal, Ordinal, and Interval/Ratio.
Nominal - Categories/levels, NO RANK/words OR #’s, case ID #, inmate #, phone #, dichotomous/dummy (Gender; Race, Ethnicity)
Ordinal-Categories, RANKABLE/can be words/numeric ranges (-10,000$ - 20,000$, -20,001$ - 30,000$), “plz select the following that best matches your age ‘18-30, 30-50’”
Interval/Ratio - Know the actual number, “I make 50,000$”
Written using Greek symbols.
null
What is N?
Population size
What is the median of this data set?
2, 4, 5, 7, 8
5