red_snapper_sampled: 2016 Texas Parks and Wildlife Red Snapper Capture-Recapture...

In williamsbenjamin/blendR: Blending a Probablilty Sample and a Non-Probability Sample in a Capture-Recapture Setting

Description

A dataset from a 2016 capture-recapture sampling program by Texas Parks and Wildlife. A probability sample of docks was selected and interviewers boarded returning charter fishing boats and counted the number of Red Snapper fish caught and number of anglers aboard. The captains of such boats had the opportunity to voluntarily self-report (via a smartphone app) the number of Red Snapper caught and number of anglers aboard. Captains who self-reported were still eligible to be sampled in the dockside intercept. The self-reports represent the "capture" sample and the dockside intercept represents the "recapture" sample. If a row in red_snapper_sampled refers to a unit which is also in the capture sample, the data frame contains the information gathered from the recapture sample. If the row refers to a unit in the recapture sample only, those columns for recapture sample data contain zeros.

Usage

red_snapper_sampled

Format

A data frame with 398 rows and 11 variables:

id

Identificaion number of a fishing trip

angler_ps

Number of anglers on fishing trip, as observed in the dockside intercept, a probability sample

number_caught_ps

Number of Red Snapper fish caught as observed in the dockside intercept, a probability sample

stratum

The stratum of the dockside intercept, either weekday or weekend

prob

Sampling probability

sample_weight

Sampling weight, reciprocal of sampling probability

number_caught_np

Number of Red Snapper fish caught, as reported by captains, a non-probability sample

anglers_np

Number of anglers on fishing trip,as reported by captains, a non-probability sample

captured_indicator

Indicator of whether the sampled trip also self-reported

delta_catch

Difference between number_caught_ps and number_caught_np

delta_angler

Difference between anglers_ps and anglers_np

williamsbenjamin/blendR documentation built on March 18, 2021, 4:07 a.m.