Mean and Median and Mode - Math Online Tutoring

Mean and Median and Mode - Math Online Tutoring Statistics: It is the study of the collection, organizing, analysis and presentation of the data. Mean: Mean () is the average of all the terms. Add up all the terms and then divide it by the number of terms. It is also called as arithmetic mean or average. Median: Place the values in ascending or descending order. If number of terms is odd, then middle term = (n+1)2 is the median. If number of terms is even, then median is the average of middle terms n2 and n2 + 1. Mode: Mode is the value that occurs most often in the set of values. Range: It is the difference between maximum and minimum values. Example 1: What is the mode of 12, 45, 37, 23, 12, 27, 4, 42, 23, 45, 12? (a) 23 (b) 45 (c) 12 (d) 27 Answer: c 12 is repeated three times. 23 is repeated two times. 45 is repeated two times. Hence 12 is the answer. Example 2: Find the mean, median and mode for 3, 4, 8, 9 Answer: Mean = (3+4+8+9)/4 = 24/4 = 6 Median = (4+8)/2 = 12/2 = 6 There is no mode.

Online Square Shape Tutors

Online Square Shape Tutors A square is a closed geometric shape which consists of 4 sides and hence 4 respective angles. The most important characteristic of a square is that all its 4 sides are equal to each other in length. And therefore, all its angles are also equal to each other. Each angle in a square is equal to 90 and the sum of all the 4 angles in a square adds up to 360. The area and the perimeter of a square can be easily calculated by using their appropriate formulas. Example 1: What is the area of a square whose side length is 10m? Given: side length of a square, s = 10m In order to calculate the area of a square, we can use its area formula. Area of a square, A = (side)2 = s2 Applying the above formula, we get: Area of a square, A = (10m)2 This gives: Area, A = 100m2 Therefore, area of the given square is 100m2. Example 2: What is the perimeter of a square whose length of the side is 12m? Given: side length of a square, s = 12m In order to calculate the perimeterof a square, we can use its perimeter formula. Perimeter of a square, P = (4 * side) = 4s Applying the above formula, we get: Perimeter of a square, P = 4 * 12 This gives: Perimeter, P = 48m Therefore, perimeter of the given square is 48m.