Flashcards in Quiz6ch131415 Deck (26)
What are the five steps for data analysis?
1) Validation and editing, 2) coding, 3) data entry, 4) logical cleaning of data, 5) tabulation and statistical
What is the ascertain that interviews were conducted as specified?
What is the checking for interviewer and respondent mistakes?
What is coding?
The grouping and assigning numeric codes to responses
What are the four steps in the coding process?
1) Listing responses, 2) consolidating responses to open questions, 3) settings codes, 4) entering codes
What is converting information to a form that can be read by software?
What is the final computerzied error check of data?
Logical cleaning of data
What is a computer-generated table of frequencies of responses to each question to monitor entry of valid codes?
What is a one way frequency table?
A table showing the number of responses to each answer
What is the examination of responses to one question relative to responses to one or more other questions?
What is a common way to set up cross-tabs?
Demographics and other predictors in the column section
What is statistical inference?
To generalize from sample results to population characteristics
What are the three concepts of differences?
Mathematical differences, statistical significance, managerially important differences
What is a type 1 error?
Rejection of the null when it is in fact true
What is the statistical methods of analyzing the relationship between two variables?
What are multivariate techniques?
When more than two variables are involved
What does the independent variable do?
Affects the value of the dependent variable
What is bivariate regression defined?
Analyzing strength of linear relationship between dependent and independent variable
What is the least squares estimation procedure?
Results in a straight line that fits the actual observations better than any other line that could be fitted
What is the predicted value for Y based on calculated values?
What is the measure of the strength of the linear relationship between X and Y
Coefficient of determination
Is 1 closer to a perfect or no relationship in terms of R^2?
Wis the degree to which changes in one variable are associated with changes in another?
What is Pearson's product moment correlation?
Correlation analysis technique for use with metric data
What is the Spearman correlation?
Measure of association using ordinal or rank order data