Hi I am analysing some results and am very new at this thing. I have grown bacteria on different agar mediums from samples before and after washing hands. I am looking at colonies of bacteria and if the number of colonies change before and after washing hands. Increase or decrease is possible. ...

Like to know the following questions comes under which type of measurment(ordinal,nominal,ratio and interval)? a) Liking school(label)- 1) like a lot,2) like a bit,3) not verymuch,4) not at all(values) - ? b)Truancy of students(label)- 1)0days 2) 1day 3) 2days 4) 3days 5) 4 days or...

I have 2 variables date_applied (mm/dd/yy) and birth (mm/dd/yy) how do I calculate the age at time of application? Thanks!