The subjects who receive the treatment or independent variable in an experimental study are called the Comparison group.
<h3>
What is Comparison group?</h3>
- In an experiment assessing the effects of therapy, a comparison group is a collection of units (such as individuals or classrooms) that either get no treatment or a different type of treatment.
- In order to support a counterfactual causal inference, a comparison group is used as evidence.
- The experimental group and the control group are contrasted in an experiment.
- The experimental group's adjusted independent variable is the only difference between the two groups. The independent variable is "controlled" or kept constant in the control group.
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Answer:
They were the two companies hired to build the railroad so guess A.
Explanation:
He spread<span> of </span>Christianity<span> was made a lot easier by the efficiency of the </span>Roman Empire<span>, but its principles were sometimes misunderstood and membership of the sect could be dangerous. Although Jesus had died, his message had not. Word of his teachings </span>spread<span> to Jewish communities across the </span>empire<span>.</span>
Answer:
By averaging the item-difficulty indices for all test items and then dividing by the total number of items on the test.
Explanation:
An item analysis deals with examining of the the response of student of individual test questions. examiners usually have different ways in which they determine the validity of their assessment. the method use to achieve this item analysis is by item-difficulty index and item discrimination index.
determining the validity of student's individual question item is very important as it helps the examiner to know the quality of the whole item and of the test.
The Item-Difficulty Index in the educational field is useful in testing for validity of test question. it is known as the amount or percentage of students who answer the test questions correctly. it is often called P-value. Item-Difficulty has the range of 0-100. the formula is achieve by the number of students who answer a question correctly divided by the total number of students in the class who answered the question(s).
Stock markets are a capital risk
