Item facility (IF) is defined here as the proportion of students who answered a particular item correctly. Thus, if 45 out of 50 students answered a particular item correctly, the proportion would be 45/50 = . 90.

What is the formula for item analysis?

Formula. The item standard deviation is the square root of the average squared deviation of the scores in one item from the item mean. The standard deviation of the total mean is the square root of the average squared deviation of all total scores from the total mean score.

What is facility value?

Facility Value means the amount equivalent to the sum total of the amount of the Loan to Value.

What is a good difficulty index?

Results. The difficulty index of MCQ ranged from 0.67 to 0.79, which is considered as optimal level. The difficulty index for Long Case ranged from 0.89 to 0.91, which is considered as less optimal level.

What is Item difficulty level?

Item difficulty is an estimate of the skill level needed to pass an item. It is frequently measured by calculating the proportion of individuals passing an item.

What is item discrimination index?

The discrimination index (DI) measures how discriminating items in an exam are – i.e. how well an item can differentiate between good candidates and less able ones. For each item it is a measure based on the comparison of performance between stronger and weaker candidates in the exam as a whole.

How to calculate the area of a square box?

For example, if you want to know the area of a square box with side 40 cm, you will use the formula: Area of Square = a 2, where a is the side of the square. Similarly, The area of a triangle can also be found using its Area formula (1/2 × b ×h).

How to calculate the area of a pallet?

Calculate the area of the pallet: 48 x 40 = 1920 square inches. Calculate the area of one case: 14 x 13 = 182 square inches. Divide the area of the pallet by the area of the case: 1920 ÷ 182 = 10.5; thus, 10 cases will fit on one layer of the pallet.

How to calculate the area of a figure?

Area Formulas for different geometrical figures: Figures. Area Formula. Variables. Area of Rectangle. Area = l × w. l = length. w = width. Area of Square.

What are the formulas for area and perimeter?

Area = 1/2 (a + b)h. a =base 1. b = base 2. h = vertical height. Area of Ellipse. Area = πab. a = radius of the major axis. b = radius of the minor axis. Perimeter Formulas for different geometrical figures: