Upgrade to remove ads
Only $2.99/month

Introduction to Research Methods: Chapter 10

Terms in this set (26)

Bar graph
a graphical representation that uses vertical bars to represent each variable.
Bivariate analysis
used to investigate the relationship between two variables.
Correlation
used to determine the extent to which two quantitative variables approximate a linear relationship.
Cumulative percent
the collective percentage of categories together.
Descriptive analysis
analysis that allows researchers to sketch the details of variables and gain familiarity with the sample.
Frequency distribution
a simple procedure that can illustrate key characteristics of participants in the sample.
Histogram
a graphical representation that presents the frequency of a variable in the form of distinct but connected bars.
Inferential analysis
analysis that provides a deeper understanding of variables because it draws conclusions about the population from the sample.
Line graph
a line connecting points in a distribution
Mean
mathematical average of a set of numbers.
Measures of central tendency
summarize an entire variable in a single value that is numerically representative of this variable.
Median
middle point in a distribution.
Mode
number that occurs with the highest frequency in a distribution.
Outliers
extreme values in a variable either too high or too low.
Pie chart
a graphical representation of the distribution of one variable, which works best with categorical variables with a small number of categories.
Quartiles
division of a distribution into quarters.
Random error
error that happens randomly during the process of handling data.
Range
the difference between the maximum and minimum values in a set of numbers.
Regression
identifies the line that best describes the relationship.
Regression line
an imaginary line that best reflects the data points.
Sampling errors
errors or mistakes that happen during data collection
Skewness
asymmetrical distribution, in which the distribution is skewed to the left or right.
Standard deviation
the square root of the variance that represents each data point's average deviation from the mean.
Statistics
a branch of mathematics in which logic is used to interpret phenomena and draw conclusions from accumulated data.
Univariate analysis
the analysis of only one variable; often descriptive in nature.
Variance
a measure of how spread out every point in the variable is from the mean.
THIS SET IS OFTEN IN FOLDERS WITH...