spro function

Calculate proportion and margin of error (stratified sample)

spro(fulldf, sampdf, strata, col_name, ci = 95, na = "")

Arguments

• fulldf: object containing original data frame used to draw sample
• sampdf: object containing data frame on which to perform analysis
• strata: variable in both data frames by which to stratify
• col_name: variable in data frame for which you want to calculate proportion and margin of error
• ci: (optional) confidence level for establishing a confidence interval using z-score (defaults to 95; restricted to 80, 85, 90, 95 or 99 as input)
• na: (optional) value that you want to filter and exclude (defaults to include everything)

Returns

Returns table of responses (n), proportions, margins of error, lower and upper bounds by factor for a given variable in a stratified sample

Examples

spro(fulldf=albania, sampdf=opening, strata=qarku, col_name=openTime, ci=95, na="n/a")

References

[1] Sampling Design & Analysis, S. Lohr, 1999, 4.6 & 4.7