Sampling

The video tutorial explains the concept of sampling, highlighting its application in various scientific contexts such as diagnosing diseases and studying ecological habitats. It introduces the quadrant method, a technique used to estimate the distribution of organisms by marking and analyzing small, randomly selected areas. The results from these samples are then scaled to provide estimates for larger areas.

What is one of the scientific contexts where sampling is used?

• To measure the height of a mountain

• To test a blood sample for disease diagnosis

• To calculate the speed of light

• To determine the age of a fossil

What is the purpose of using quadrants in habitat studies?

• To create a map of the area

• To mark out small, randomly selected areas for study

• To build a fence around the habitat

• To identify the tallest tree in the area

How are the figures obtained from quadrants used?

• They are used to estimate the entire area

• They are sent to a laboratory for further analysis

• They are used to build a model of the habitat

• They are discarded after counting

Which of the following is NOT a step in the sampling process described?

• Using quadrants to mark areas

• Counting items inside the frames

• Scaling up figures to estimate the entire area

• Measuring the temperature of the habitat

What is the main goal of scaling up figures obtained from sampling?

• To create a detailed map

• To determine the age of the habitat

• To estimate the total number of organisms in the entire area

• To find the average size of organisms