The demand curve is an economic graph that depicts how many of your products or services your customers will purchase based on the price. This gives you a picture of how price affects demand, and it often reveals that demand increases as price decreases, and vice versa. Increased Job Creation One of the major factors that shift demand curve occurs when a number of new jobs are created.
Validity of a Test: This article throws light upon the five main factors affecting the validity of a test. Factors in the Test Itself 2. Functioning Content and Teaching Procedure 3. Factors in Test Administration and Scoring 4. Nature of the Group and the Criterion.
Factors in the Test Itself: Each test contains items and a close scrutiny of test items will indicate whether the test appears to measure the subject matter content and the mental functions of the teacher wishes to test.
The following factors in the test itself can prevent the test items from functioning as desired and thereby lower the validity: A test usually represents a sample of many questions. If the test is too short to become a representative one, then validity will be affected accordingly. Homogeneous lengthening of a test increases both validity and reliability.
The formula which determines the length to which a test may be increased is: How many times it must be lengthened if a validity coefficient of.
If directions regarding how to respond to the items, whether it is permissible to guess and how to record the answers, are not clear to the pupil, then the validity will tend to reduce. The complicated vocabulary and sentence structure meant for the pupils taking the test may fail in measuring the aspects of pupil performance; thus lowering the validity.
When the test items have an inappropriate level of difficulty, it will affect the validity of the tool. For example, in criterion-referenced tests, failure to match the difficulty specified by the learning outcome will lower the validity.
Ambiguity in statements in the test items leads to misinterpretation, differing interpretation and confusion. Sometimes it may confuse the better students more than the poorer ones resulting in the discrimination of items in a negative direction.
As a consequence, the validity of the test is lowered. Many times what happens is that we try to measure certain complex types of achievement, understanding, thinking, skills etc. This affects the results and leads to a distortion of the validity.
Items in the test are generally arranged in order of difficulty with the easiest items first. If the difficult items are placed early in the test, it may make the students spend too much of their time on these and fail to reach other items which they could answer easily.The Big Five factors of poverty appear to be widespread and deeply embedded in cultural values and practices.
We may mistakenly believe that any of us, at our small level of life, can do nothing about them. What Factors Affect Supply? Change in quantity supplied is a rise or fall in the amount producers FIGURE NUMBER OF PRODUCERS Chapter 5 it may affect how much of that product they are willing and able to supply in the present.
Different. Supply can be influenced by a number of factors that are termed as determinants of supply. Generally, the supply of a product depends on its price and cost of production. In simple terms, supply is the function of price and cost of production.
Five Determinants of Demand with Examples and Formula The Five Factors Affecting Demand Using Examples in the U.S. Economy. Share Flip Pin Email.
The 5 biggest factors that affect your credit By Amy Fontinelle A credit score is a number that lenders use to determine the risk of loaning money to a given borrower. Certain factors affect the demand curve. Market Size The number of potential buyers that may purchase your company's products or services determines the size of the market.