Research Methods
The variable that the researcher measures in a research study.
What is the dependent variable?
Name for whether the shape of the distribution is peaked or flat.
What is kurtosis?
What scale/level of measurement contains the most information?
What is the ratio level or ratio?
Measure of central tendency to use with ordinal data.
What is the median?
s2 is the abbreviation for
What is SAMPLE variance?
Statistics brings order to ______.
What is chaos?
Discrete variables are graphed in/on a
What is a bar graph or bar chart?
What kind of number is the equality of unit a key feature of?
What is the interval or interval level?
Value/number that summed deviation scores always equal
What is zero?
Which has more variability: Distribution A whose s = 3.69 OR Distribution B whose s = 1.54?
What is Distribution A?
The type of research design one CAN assume causality from.
What is the experimental design or experimental research design?
fc is the abbreviation for
What is "cumulative frequency"?
Wind direction would be measured on which scale/level of measurement?
What is the nominal level or nominal?
Extreme scores are also called
What are "outliers"?
Types of data/numbers (scale/level of measurement) you can calculate the variance and standard deviation for.
What are interval and ratio data/numbers?
The three possible explanations for a correlation between X and Y.
What are: 1) X causes Y; 2) Y causes X and 3) a third variable causes both X and Y?
Visual difference between a bar graph and a histogram.
What are the bars are touching in a histogram or not touching in a bar graph?
Discrete numbers question ____ ____. Continuous numbers question ____ ____.
What are "how many" and "how much"?
Type/shape of the distribution of scores where the mean, median and mode are the exact same number.
What is a normal or bell shaped distribution?
The reason we must square the deviation scores before summing them when calculating variance.
What is because without squaring the sum of the deviation scores would equal zero?
As discussed in class, what differentiates a quasi-experiment from an experiment?
What is random assignment?
Percentages are a way of transforming scores to put them ____ ____.
What is "in context"?
Nominal and ordinal numbers are always _________ numbers.
What is discrete?
Where the mean is "pulled" in an asymmetrical distributions.
What is "toward the tail"?
The reason we "correct" and divide by N - 1 for SAMPLE variance.
What is to better approximate the population variance - because there is more variance in the population than in the sample, we divide by N - 1 to make the variance of the sample larger?