Sampling

positioning sampling units in the landscape how do we decide where to put our sample units when we're determining our sampling designs? These decisions are made with respect to the need for...

So we are here collecting bed load, suspended-sediment load, and discharge measurements. The Corps of Engineers has asked us to collect some data to try to determine exactly how much sediment is...

So, today we will introduce sampling distributions. So, first of all, we introduce, what we mean by a sample? What is a population? So, we introduce the term population. So, a population is a...

In this lecture, we discuss two methods that can be used to create digital filters. I will discuss these methods while using a low-pass filter as my example, but these methods can be used to create...

Hello. This is Professor Poyser, and I'm going to show you part b of chapter 5's question number 37. And this, again, is on page 212. I previously recorded part a's result. In...

In this video, you learn how to take a random sample using PROC SURVEYSELECT in SAS. PROC SURVEYSELECT is the go-to procedure for what’s called probability-based random sampling. PROC SURVEYSELECT...

Now we will discuss Bacteriological Sampling. Now...diseases are transmitted by unsafe water. Some of the diseases that are transmitted by unsafe water is typhoid, paratyphoid, bacillary dysentery,...

[ music ] >> When you have a suspect package and you want to sample it for particles, you always want to sample the areas where the package was sealed because this would have come into...

Dining Services, along with the Student Wellness - Nutrition team, is doing a food sampling of the fresh foods that are available across our campus in our vending machines with samples today over at...

So because it usually doesn't make sense for us to, you know, try to talk to everybody to do a census. usually we need to create a sample. And so there's a variety of ways in which we...