Experimental Designs

View the YouTube clip https://www.youtube.com/watch?v=VhZyXmgIFAo to respond to these following 4 questions. Respond with anything to move past this question, every answer will be marked correct :)

What is the initial conclusion drawn by Mike?

• That it is better to water a plant with 100ml of water three times a week

• That it is better to water a plant once a week

Why is the conclusion that 'it is better to water a plant once a week' unfair?

• Because Mike has a green thumb and is better able to care for the plant

• Because the plants were different plants

• Because different soil was used for the plants

• Because the plants were stored at different light levels

Why should Mike and Molly repeat the trials with their plants both in sunlight a few times?

In scientific experiments everything needs to be constant, except ___________ variable

View the video at https://www.youtube.com/watch?v=9eZYufPP2-o. Respond with anything to move past this question, every answer will be marked correct :)

Which of these is not an experimental design?

• Repeated Measures

• Observation Groups

• Independent Groups

• Matched Pairs

For the repeated measures design, one group of participants take part in both the control and _______________ tasks

Which of the following is not a positive of a repeated measures design?

• Participants may learn what the study is about and want to produce the right result

• Having the same participants means there are less variables

• There are less participants which means that the study may cost less.

Different ________________ are used in each group. This means that each participant does only one condition or performs one task.