Measuring Mean, Median, Mode, and Range Data Management Presentation in Colorful Bold Illustrative Style.pdf
- 2. PRE-ASSESSMENT Which is not a measure of central tendency? A. Mean B. Median C. Range D. Mode
- 3. PRE-ASSESSMENT The number of kilos of rice each household in a Sitio in Iba, Zambales received from relief goods are: 5, 5, 10, 15, and 20. What is the mean amount of rice? A. 10 B. 11 C. 12 D. 13
- 4. PRE-ASSESSMENT In a barangay cleanup drive, the number of volunteers per street were: 12, 15, 12, 18, 12. What is the mode? A. 12 B. 15 C. 18
- 5. PRE-ASSESSMENT The following are prices of tilapia per kilo in San Marcelino market: ₱100, ₱110, ₱120, ₱115, ₱105. What is the median price? A. ₱105 B. ₱110 C. ₱115 D. ₱120
- 6. PRE-ASSESSMENT Which of the following best describes the mode? A. Most frequent number B. Highest value C. Middle value D. Difference between highest and lowest
- 7. PRE-ASSESSMENT A teacher in San Felipe recorded quiz scores: 10, 15, 20, 25, and 80. Which measure is least affected by the high score (80)? A. Mean B. Mode C. Median D. All are equally affected
- 8. PRE-ASSESSMENT During the fiesta in Botolan, students listed the number of games they joined: 2, 3, 2, 4, 2. The mode is: A. 2 B. 3 C. 4 D. 5
- 9. PRE-ASSESSMENT If the median age of SK members in a barangay is 18, this means: A. All are 18 B. The middle value is 18 C. 18 is most common D. Age difference is 18
- 10. PRE-ASSESSMENT What is the middle value of the sorted data: 10, 20, 30, 40, 50? A. 20 B. 30 C. 40 D. 50
- 11. MEASURE OF CENTRAL TENDENCY Mean, Median and Mode
- 12. Objectives 1.Illustrate the measure of the central tendency( mean, median and mode) of the statistical data. 2.Calculate the measure of the central tendency of ungrouped and grouped data. 3.Use appropriate statistical measure in analyzing and interpreting data. In this presentation we will:
- 13. MATH-ARRANGE ACTIVITY: 7 representative from the class. Student need to follow what the instructor says:
- 14. Araange yourself ACCORDING TO: According to... YOUR AGE Who is in the middle? Who is in the youngest? Who is in the oldest? Do we have same age?
- 15. Araange yourself ACCORDING TO: According to... SIZE OF YOUR SHOES Who is in the middle? Who is the smallest size? Do we have same size? Who is the biggest size?
- 16. Mean is the average of the number set. Mean To calculate mean, we add together all the numbers (n) in a set, and then divide by the total count of numbers (n) in the set. Mean = (sum of all numbers) ÷ (total count of numbers)
- 17. Let’s use this number set as an example. Mean - Example Mean = (sum of all numbers) ÷ (total count of numbers) Age of fiftheen students of Grade 8 Mean = (10 + 15 + 20 + 25 + 30) ÷ (5) Mean = 20
- 18. BOARD WORK Test Scores of 5 students in Math Quiz . find the mean. 85, 90, 88, 92, 95 Scores: 90
- 19. BOARD WORK Five farmers harvested: 120 kg, 135 kg, 140 kg, 125 kg, and 130 kg of mangoes. Scores: 130 kg.
- 20. SEATWORK: Find the Mean of the given data. 1. The number of assignments given in a week by different teachers: 3, 4, 5, 2, 6. 2. The number of minutes spent in reading during Homeroom Time at St. William: 10, 12, 15, 10, 13 3. Number of chairs prepared in Grade 8 classrooms for an event: 40, 42, 38, 41, 39 4. The number of Grade 8 students who participated in school clean-up drive each day: 15, 18, 20, 17, 19 5. Number of pieces of paper used in one week for classroom activities: 10, 12, 15, 13, 11
- 21. Median is the middle number in a set where the numbers are arranged from smallest to largest. Median If the number set is odd, the middle number is the median. If the number set is even, the middle number is the average of the two middle numbers.
- 22. Let’s use this number set: Median - Example #1 {12, 25, 18, 20, and 15} First arrange numbers from smallest to largest. {12, 15, 18, 20, and 25} This number set is odd because there are 5 numbers in the set. The medium is 18.
- 23. Let’s use this number set: Median - Example #2 {12, 25, 18, 20} First arrange numbers from smallest to largest. {12, 18, 20, and 25} This number set is even because there are 4 numbers in the set. We take the average of the two middle numbers. Median = (18 + 20) ÷ 2 = 19
- 24. Mode is the number that appears most often in a number set. Mode A number set can have: one mode a number of modes no modes at all
- 25. Let’s take a look at this number set. Mode - Example {7, 8, 9, 9, 10, 10, 12} This set has two numbers that appear more than once. Therefore the modes for this set are 9 and 10.
- 26. Range is the difference between the largest and smallest values in a number set. Range Range = (largest value) - (smallest value)
- 27. Let’s look at this number set: Range - Example Range = (largest value) - (smallest value) {5, 10, 15, 20, and 25} Range = 25 - 5 Range = 20
- 28. Mean Median Mode Range Let’s look at this number set: Let’s Practice! Find each of the following: {5, 10, 12, 15, 12, 20, and 25}
- 29. Mean 13.85 Median 12 Mode 12 Range 20 Let’s look at this number set: Let’s Practice! (Answers) Find each of the following: {5, 10, 12, 15, 12, 20, and 25}
- 30. Let’s look at real world examples of when to use mean, median, mode and range. Real World Examples Average test scores in a class Middle income salary in a city Most common shoe sizes in a store Temperature ranges in a month
- 31. To summarize what we learned today, take notes on key words. Summary MEAN is the AVERAGE number MEDIAN is the MIDDLE number MODE is the COMMON number RANGE is the DIFFERENCE between the largest and smallest number