rpro function

Calculate proportion and margin of error (simple random sample)

rpro(df, col_name, ci = 95, na = "", N = 0)

Arguments

• df: object containing data frame on which to perform analysis (e.g. data)
• 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)
• N: (optional) population universe (e.g. 10000, nrow(df)); if N value is passed as an argument, margin of error will be calculated using fpc

Returns

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

Examples

rpro(df=opening, col_name=openTime, ci=95, na="n/a", N=5361)

References

[1] Sampling Design & Analysis, S. Lohr, 1999, Equation 2.15