7.2 Using transects and quadrats

Unbiased sampling is:

• when you choose the group you think will represent the sample
• when any member of the population is equally likely to be chosen for the sample

Biased sampling is

• when you choose a population that is more likely to give you the result you want
• when you choose a group that is equally likely to be chosen

Tags

NGSS.HS-LS3-3

What is a suitable way to sample plants in a field?

• Counting Random Plants

• Using Quadrats

• Using Pooters

• Using Pitfall traps

What is a Belt Transect?

• A way of sampling a changing habitat

• A way of sampling a non-changing habitat

• A way of keeping up your pants

What would be a suitable way to sample this habitat?

• Belt Transect

• Line Transect

• Both would be suitable

What is a quadrat

• A type of bike

• A sampling tool typically of one square metre, used to sample plants

• A sampling tool typically of one square metre, used to sample animals

• A type of hat

Which of the following is true about quadrats?

• quadrats should be placed randomly so that a representative sample is taken

• you should look at the results from several quadrats in an area to reduce the effect of an unusual distribution

• the results are more reliable when you look at the results from many quadrats

• All the above are true

What is a suitable way to sample small invertebrates living on the ground.

• Quadrats

• Sweep nets

• Pitfall traps

• Water Sampling

When sampling daisies how will amount of light affect them?

• Less Light = More Daisies

• More Light = Less Daisies

• More Light = More Daisies

• Less Light = More Grass

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

What is the best way to place a quadrat?

• Place it where you like

• Divide the sample area into a grid and use a random number generator to choose a square.

• Throw the quadrat so it's random

• Divide the sample area into a grid and choose a square.