লক্ষ্য করুন: এই এন্ট্রির অনুবাদ বর্তমানে মান পর্যালোচনার অধীনে রয়েছে, তাই কিছু বিষয়বস্তু সাময়িকভাবে শুধুমাত্র ইংরেজিতে প্রদর্শিত হচ্ছে।
এই এন্ট্রিটি এখনও আপনার ভাষায় অনুবাদ করা হয়নি, তাই নিচে মূল লেখাটি দেখানো হচ্ছে।
control group
This term is a technical staple of the scientific method, specifically within clinical trials and psychological research. It serves as the baseline against which the experimental group is measured, ensuring that observed changes are caused by the independent variable rather than external factors or chance.
In professional research contexts, a control group may be a placebo group, where participants receive an inactive substance, or a no-treatment group. Using this term in non-scientific contexts usually implies a desire for a rigorous, objective comparison to validate a specific outcome.
Meanings
Examples
The researchers assigned fifty participants to the control group.
We need a larger control group to ensure the results are statistically significant.
Did the control group receive a placebo or no treatment at all?
The control group showed no significant change in blood pressure over the six month period.
I wonder if the control group was properly randomized.
Comparing the treated subjects to the control group revealed a clear improvement in recovery time.
The study failed because the control group was not representative of the general population.
Make sure the control group is kept under the exact same conditions as the experimental group.