DAA_10_Data-format

Which of these are important considerations when making a data file

• Variables as columns and observations as rows

• Numerical variables should only have numbers

• Don't do calculations in the data file

• Make backups

What is a mistake when collecting data in a file

• Variables as columns and observations as rows

• Numerical variables should only have numbers

• Calculate the means in the data spreadsheet

• Put units in the same cell than measurements

I am making a data file with leaf measurements in different species. One of the species is sessile (no petiole). In the variable "petiole.length" I should

• leave it empty

• Put 0

• Put 0 and *

• Put a signal: *

For the variable "Mean of the minimal temperatures on the coldest month in Celsius degrees", which is the best name

• var021

• MMTCMCD

• Mean of minimals ºC

• temp.cold.min.m

Best format for dates

• 21st March 1970

• 21/03/1970

• 03-21-1970

• 1970-03-21