TAILIEUCHUNG - Lecture General mathematics: Lecture 31 - Ms. Fehmida Haroon

Lecture provides knowledge of the continuity of functions. The main contents of this chapter include all of the following: Continuity of functions, continuity on an interval. Inviting you refer. | General Mathematics ADE 101 Unit 4 LECTURE No. 31 MEAN MEDIAN MODE AND RANGE 1 Today’s Objectives Knowledge Test These are Amar’s science test scores 97 84 73 88 100 63 97 95 86 What can you tell us about these numbers? 97 84 73 88 100 63 97 95 86 Let's define these words & learn how to find them. Measures of Central Tendency Circle the measures of central tendency below. (Hint: There are only 3 measures of central tendency.) Mode Mean Range Median What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then dividing the sum by the number of values. Lets find AMAR’s MEAN science test score? 97 84 73 88 100 63 97 95 86 + Add all the values. Divide the sum by the number of values. 783 783 ÷ 9 The mean is 87 What is the MEDIAN? How do we find it? The MEDIAN is the number that is in the middle of a set of data Arrange the numbers in the set in order from least to greatest. Then find the number that is in the middle. 97 84 73 88 10 63 97 95 86 Find the number that is in the middle. The median is 88. Half the numbers are less than the median. Half the numbers are greater than the median. Arrange values from least to greatest Median Sounds like MEDIUM Think middle when you hear median. small medium large How do we find the MEDIAN when two numbers are in the middle? 1. Add the two numbers. 2. Then divide by 2. 97 84 73 88 100 63 97 95 Arrange values from least to greatest There are two numbers in the middle. 88 + 95 = 183 183 ÷ 2 The median is Add the 2 numbers. Divide by 2. What is the MODE? How do we find it? The MODE is the piece of data that occurs most frequently in the data set. A set of data can have: One mode More than one mode No mode 97 84 73 88 100 63 97 95 86 Arranging values from least to greatest makes it easier to find the mode. Find the number that appears more or most frequently. The value 97 appears twice. All other numbers appear just once. 97 is the MODE 17 A

• Toán học
• General mathematics
• Lecture General mathematics
• Geometric measurement
• Algebraic thinking
• Mathematical knowledge
• Constant functions
• Number pattern
• Cartesian coordinate system
• Liner equations
• Graph of liner equations
• Linear equation
• Natural numbers