Fit a quasi-Poisson GLM to analyse differences in monthly issue rates across popularity strata. The month_num:popularity_stratum interaction tests whether the long tail trends differently from the popular head, rather than just reporting one global trend line.

Fit a quasi-Poisson GLM to analyse differences in monthly issue rates across popularity strata. The month_num:popularity_stratum interaction tests whether the long tail trends differently from the popular head, rather than just reporting one global trend line.

Usage

fit_activity_model(rate_tbl)

Arguments

rate_tbl

As returned by issue_rate_tbl().

Value

A fitted glm object.

Examples

if (FALSE) { # \dontrun{
model <- fit_activity_model (rate_tbl)
summary (model)
} # }