Questions: Select the essential components of a well-designed experiment. Randomization Replication Blinding Block design Multiple treatment groups A control group An equal number of observational units in each treatment

Select the essential components of a well-designed experiment. Randomization Replication Blinding Block design Multiple treatment groups A control group An equal number of observational units in each treatment
Transcript text: Select the essential components of a well-designed experiment. Randomization Replication Blinding Block design Multiple treatment groups A control group An equal number of observational units in each treatment
failed

Solution

failed
failed

The essential components of a well-designed experiment are:

  1. Randomization: This ensures that each participant or experimental unit has an equal chance of being assigned to any of the treatment groups, which helps to eliminate bias and confounding variables.

  2. Replication: This involves repeating the experiment multiple times or having multiple subjects in each group to ensure that the results are reliable and not due to random chance.

  3. Blinding: This can be single-blind (where the participants do not know which treatment they are receiving) or double-blind (where neither the participants nor the experimenters know who is receiving which treatment). Blinding helps to prevent bias in the results.

  4. A control group: This is a group that does not receive the experimental treatment and is used as a baseline to compare the effects of the treatment.

These components are crucial for ensuring the validity and reliability of an experiment.

Explanation of Each Option:
  • Randomization: Correct. It helps to distribute any confounding variables evenly across the treatment groups.
  • Replication: Correct. It increases the reliability of the results by reducing the impact of random variation.
  • Blinding: Correct. It reduces bias in the measurement of outcomes.
  • Block design: This is a method used to reduce variability within treatment groups by grouping similar experimental units together. While useful, it is not always essential.
  • Multiple treatment groups: This can be important for comparing different treatments, but it is not always essential for a well-designed experiment.
  • A control group: Correct. It provides a baseline to compare the effects of the treatment.
  • An equal number of observational units in each treatment: This is often desirable to ensure balanced comparisons, but it is not always essential.
Summary:

The essential components of a well-designed experiment are randomization, replication, blinding, and a control group. These elements help to ensure that the experiment is unbiased, reliable, and valid.

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
The amount of 5000 is invested at 4% for 3 years. Write your answers to the nearest cent, if necessary. (a) Compute the ending balance if the bank calculates simple interest. The total amount in the account is 5600 (b) Compute the ending balance if the bank calculates interest compounded annually. In year 1, the interest earned will be 200. In year 1, the total amount in the account will be 5200
failedAnswered
QUESTION 14 - 1 POINT Norville collected the data below about the length of the femur and their height both in centimeters for 10 different adults. Use this information to determine the correlation coefficient, round to 4 decimals. femur length: 47.18, 47.88, 35.56, 35.99, 37.75, 43.03, 41.45, 44.95, 38.19, 37.61 height: 160, 186, 190, 165, 163, 157, 161, 154, 185, 163 Provide your answer below: r=
failedAnswered
Which of the following experiment setups would be the best way to test your hypothesis? Before the exam, give students a survey questioning their study habits and what grade they think they will make on the exam. Before the exam, give students a survey questioning their study habits. After the exam, give students a survey questioning their study habits and what grade they think they made on the exam. After the exam, give students a survey questioning their study habits and what grade they made on their exam.
failedAnswered
Use the diagram to answer the question. MN and PQ are chords that intersect at point R. MR=8 NR=4 PR=5 *not drawn to scale What is QR ? A. 2.5 B. 6.4 C. 7 D. 9 E. 10
failedAnswered
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 66% at a level of significance of a=0.01. According to your sample, 45 out of 73 potential voters prefer the Democratic candidate.