assess_range_of_bias    Assess the range of possible bias based on
                        specified assumptions about how nonrespondents
                        differ from respondents
calculate_response_rates
                        Calculate Response Rates
chisq_test_ind_response
                        Test the independence of survey response and
                        auxiliary variables
chisq_test_vs_external_estimate
                        Test of differences in survey percentages
                        relative to external estimates
get_cumulative_estimates
                        Calculate cumulative estimates of a
                        mean/proportion
involvement_survey_pop
                        Parent involvement survey: population data
involvement_survey_srs
                        Parent involvement survey: simple random sample
involvement_survey_str2s
                        Parent involvement survey: stratified,
                        two-stage sample
predict_outcome_via_glm
                        Fit a regression model to predict survey
                        outcomes
predict_response_status_via_glm
                        Fit a logistic regression model to predict
                        response to the survey.
rake_to_benchmarks      Re-weight data to match population benchmarks,
                        using raking or post-stratification
stepwise_model_selection
                        Select and fit a model using stepwise
                        regression
t_test_by_response_status
                        t-test of differences in means/percentages
                        between responding sample and full sample, or
                        between responding sample and eligible sample
t_test_of_weight_adjustment
                        t-test of differences in estimated
                        means/percentages from two different sets of
                        replicate weights.
t_test_vs_external_estimate
                        t-test of differences in means/percentages
                        relative to external estimates
wt_class_adjust         Adjust weights in a replicate design for
                        nonresponse or unknown eligibility status,
                        using weighting classes
