Exam 20: Basic Data Analysis: Descriptive Statistics

Explain the components of a box and whisker plot.

When a researcher combines the "Strongly Disagree" and "Disagree" responses on a Likert scale item to a single "Strongly Disagree/Disagree" percentage,this is an example of:

The row and column totals in a contingency table are called subtotals because they are less than the total.

Box and whisker plots provide graphic representations of central tendencies,percentiles,variabilities,and the shapes of frequency distributions.

A researcher interested in a data matrix that displays the frequency of some combination of possible responses to multiple variables should construct a:

When a third variable inserted into the analysis changes the results when two other variables were studied previously,this third variable is called a moderator variable.

Cross-tabulation allows the inspection and comparison of differences among groups based on nominal or ordinal categories.

A contingency table is a data matrix that displays the frequency of some combination of possible responses to multiple variables.

Researchers usually are most interested in the marginals in a contingency table.

A value that lies far beyond the range of the rest of the data set is called a(n)____________________.

Carlos is examining the row and column totals in a contingency table.What are these called?

The researcher examining descriptive statistics for any particular variable is using which type of statistics?

All statistics that are appropriate to use for higher-order scales (ratio scales are the highest)are also appropriate to use with lower-order scales (nominal scales are the lowest).

Explain what an index number is and how it is computed.What level of measurement is required to compute index numbers?

Which of the following is a graphical way of showing the frequency distribution in which the height of a bar corresponds to the frequency of a category?

When the responses to two survey questions are presented as a cross-tabulation of the two variables studied in these two questions,the result is called a(n)____________________ table.

Scores or observations recalibrated to indicate how they relate to a base number are referred to as:

A graph in which the height of a bar matches the frequency with which that category occurred is called a(n)____________________.

When tabulation is done by hand to create a frequency table,this is called ____________________ the data.

The process of changing data from its original form to a format that more closely matches the research objectives of the study is called data ____________________.