golftees: Golf tee data

In Distance: Distance Sampling Detection Function and Abundance Estimation

Golf tee data

Description

The data are from independent surveys by eight observers of a population of 250 groups (760 individuals) of golf tees. The tees, of two colours, were placed in groups of between 1 and 8 in a survey region of 1680 m^2, either exposed above the surrounding grass, or at least partially hidden by it. They were surveyed by the 1999 statistics honours class at the University of St Andrews.

Format

Data is a list with 4 elements each of which is a data.frame:

• book.tee.dataframe

  • object object ID

  • observer observer ID

  • detected detected or not detected

  • distance perpendicular distance

  • size group size

  • sex number of tees in group

  • exposure tee height above ground

• book.tee.region

  • Region.Label stratum name

  • Area stratum size

• book.tee.samples

  • Sample.Label transect label

  • Region.Label stratum name

  • Effort transect length

• book.tee.obs

  • object object ID

  • Region.Label stratum in which it was detected

  • Sample.Label transect on which it was detected

Details

We treat each group of golf tees as a single animal with size equal to the number of tees in the group; yellow tees are male, green are female; tees exposed above the surrounding grass are classified as exposed, others as unexposed. We are grateful to Miguel Bernal for making these data available; they were collected by him as part of a masters project.

References

Borchers, D. L., S.T. Buckland, and W. Zucchini. 2002. Estimating Animal Abundance: Closed Populations. Statistics for Biology and Health. London: Springer-Verlag. https://link.springer.com/book/10.1007/978-1-4471-3708-5

Buckland, S.T., D.R. Anderson, K.P. Burnham, J.L. Laake, D.L. Borchers, and L. Thomas. Advanced Distance Sampling: Estimating Abundance of Biological Populations. Oxford University Press. Oxford, 2004.

Distance documentation built on Oct. 24, 2024, 5:08 p.m.