Question

Which of the following could function as an environmental variable in an experiment? Level of illumination...

Which of the following could function as an environmental variable in an experiment?


Level of illumination



Drug dosage



Problem difficulty



Subject gender

Social-Sciences   Psychology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Environmental variable is also known as external variable. External variables are variables which cause an effect on the dependent variable. In an experimental research, the researcher wants to see the effect of independent variable on the dependent variable solely. An effect of external variable on the experiment reduces the validity of the test. Level of illumination or light can function as an environmental variable in an experiment. For instance, one room has direct sunlight coming in and the other is relatively dingy, sunlight and level of illumination can function as an external variable.

Thus, the correct answer is option A.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Which of the following is an example of a variable measured at the nominal level of...
Which of the following is an example of a variable measured at the nominal level of measurement? a. Location in which respondent was born b. Religiosity measured as not religious, somewhat religious, and very religious c. Time in seconds in which subject completes a given task d. Number of respondents’ first cousins
Which of the following is not an experiment for which we could apply the definition of...
Which of the following is not an experiment for which we could apply the definition of finite probability? Rolling a die Rolling 5,000 dice Shooting a basketball at a hoop Selecting a quarter from a bag of 10 quarters
Your friends performs metagenomics on an environmental sample. This experiment demonstrates the presence of the following...
Your friends performs metagenomics on an environmental sample. This experiment demonstrates the presence of the following microbes: Citromicrobium, Pelagibacter, Nitrosopumilus, Prochlorococcus, and Trichodesmium. From which location was this sample most likely taken? •   O horizon •   Open ocean •   Rhizosphere •   Biofilm •   Deep sea •   Freshwater
Which of the following statements is true about the impact of environmental regulation on business? Local...
Which of the following statements is true about the impact of environmental regulation on business? Local businesses such as dry cleaners and bakeries are not subject to state and federal environmental laws. An understanding of environmental law is important in limiting a company's liability and maintaining regulatory compliance. Owners of businesses are only held liable for contamination of property or the environment if they contributed to the contamination. Environmental law and regulation is a concern only for owners of large...
In a true experiment, participants __________ a particular level of a variable and then are measured...
In a true experiment, participants __________ a particular level of a variable and then are measured on another variable. are measured on meet the criterion of request to be assigned to are randomly assigned to Flag this Question Question 31 pts Researchers say that a correlation is significant if ____. there is a large probability (.50 or larger) that this correlation is greater than that computed in standard tables of what is called the chi-square distribution there is a small...
Answer the following: Taking into account your engineering specialty, which can be civil, environmental, electrical, think...
Answer the following: Taking into account your engineering specialty, which can be civil, environmental, electrical, think that could happen if you are taking data to know how you can solve an engineering problem that presents itself and the data you took were not taken properly and do not represent The population you are analyzing. What could happen?
If the price level is increasing and output is falling, which of the following could be...
If the price level is increasing and output is falling, which of the following could be the reason? a) a positive demand shock b) a negative supply shock c) a negative demand shock d) a positive supply shock
Following Question 1. The researcher thought that another variable, gender, might also affect the income level....
Following Question 1. The researcher thought that another variable, gender, might also affect the income level. Thus, he created a dummy variable for gender (1 for male and 0 for female) and estimated the regression model with two independent variables. a) Write down the estimated regression equation. b) What is the value of R square in this regression model? Compared with the R-square in Question 1, what is the additional contribution of gender to the percentage of variance explained? c)...
Given the following cost function, determine (a) the level of (nonzero) output at which the average...
Given the following cost function, determine (a) the level of (nonzero) output at which the average cost function in minimized, and (b) the average cost at that level. AC = 1000 -175Q + 12.5Q2 An Average Cost is at a minimum when its derivative function (measuring its change) is zero.
which of the following is not a factor that could influence worker productivity? 1. the level...
which of the following is not a factor that could influence worker productivity? 1. the level of skill and training workers posses will affect their productivity. 2. the amount of automation used in the production process. 3. worker's level of fatigue will affect the direct labor efficiency variance. 4. the quality of direct material used.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT