Essential Terms
A researcher is studying whether or not having a tutor can improve one's math grade. This is the dependent variable.
These levels of measurement are continous.
What are interval and ratio?
When working with continuous data, you make this kind of graph.
What is a histogram?
A graph with a skew of 0.37 has this kind of skew.
No skew.
This is the subset of a population that an experimenter collects data from.
This kind of research is controlled and manipulates one of the variables to measure it's effects.
What is experimental research?
Name two examples of ordinal data.
What are (answers can vary)? Ex: positions (1st, 2nd), Likert scales (very satisfied, moderately satisfied), class rank, rating (1-5).
These two charts can be used for categorical variables.
Name the skew & kurtosis.
Skew: -1.3
Kurtosis: -0.29
What are negative skew and mesokurtic?
This is a number that is used to describe a population.
What is a parameter?
When gathering data for your study, one of the questions you ask your participants is about their favorite Netflix series. You are gathering this kind of data.
Time is took someone to complete their exam is this level of measurement.
What is ratio?
Advanced bar charts can be used when we want the y-axis to display something other than this.
What is frequency?
Name the skew and kurtosis.
Skew: 1.54
Kurtosis: 3.9
What are positive skew and leptokurtic?
A positive z-score means this.
What is a score above the mean?
A researcher is collecting data on a group of college students. He asks each student how often they feel depressed, ranging from 1 (none of the time) to 5 (all of the time). The first student to respond answers 4. These are the values in this study.
What is 1 (none of the time) to 5 (all of the time)?
What is interval?
Name the two options that can be used in order to describe multiple variables at once.
What are advanced bar charts & crosstabs?
Name the two other ways we can describe a graph with no skew.
The mean is 70, and the standard deviation is 3. If your score had a z-score of -2, your score would be this.
What is 64?
What is descriptive statistics?
Zip code (01915) falls under the level of measurement.
What is nominal?
Explain the first three things you would click on in SPSS in order to find information like central tendency, skew, and kurtosis.
What is Analyze --> Descriptives --> Frequencies?
On a graph with a flat peak and a tail to the right, there is this kind of skew and kurtosis.
What are positive skew and platykurtic?
The mean of the raw score has this z-score.
What is 0?