Exam 9: Quantitative Data Analysis

Estimating the probability that an association between two variables is not due to chance in a cross-tabular analysis is based on an inferential statistic called ______.

How are the properties of a normal curve important for analyzing data?

In the following distribution of the variable semesters completed,which is the mode: 4,3,1,0,3,3,4,0,3,2?

The beginning point of axes on graphs should be zero unless clearly marked.

Adding an intervening variable in a bivariate analysis allows us to understand what potential part of the relationship?

How can statistics be unethically manipulated? Outline the specific ethical considerations associated with using statistics for social data analysis.

A bar chart is best used to display what kind of data?

______ is NOT an aspect of a crosstabulation table.

A combined frequency display eliminates unnecessary percentages,such as those corresponding to the second value of a dichotomous variable.

The median is the arithmetic average of the values on a given variable.

Compute three measures of central tendency and two measures of variability for the following data set: When asked their age,10 college students responded: 21,19,20,18,18,19,33,22,19,and 18.Given this distribution,which measures of central tendency and variability are most appropriate? Explain your decision,drawing a graph or creating a frequency distribution as necessary.

In what circumstances should data be grouped in frequency distributions? How does one determine which groups should be used?

Third variables can be entered into a bivariate relationship for all of the following reasons EXCEPT ______.

A unimodal distribution has a single value that is selected most often.

If the purpose of a statistic is to report the middle position in one or more distributions,which of the following is the appropriate statistic?

The mathematical likelihood that an association is not due to chance and typically expressed using a p value is ______.

In bar charts and histograms,bars should be of unequal width to facilitate comparing between categories.

A standard deviation is the square root of the ______.

The quantitative analysis of findings from multiple studies is known as ______.

Any pattern of association between two quantitative variables that does not involve a regular increase or decrease is known as ______.