1. Mean, Median and Mode 2. First Quantile, third Quantile and Interquantile Range. Lecture 2 – Grouped Data Calculation. Measures of Central Tendency: Mean, Median, and Mode Examples 1. Lesson Initiator – What is the purpose of finding an “average?” 2. In analyzing, statistical data, it is often useful to have numbers describe the complete set of data. “Measures of central tendency” are used because they represent centralized or middle values of the data. Apr 09, · ↪ Different forms of data need different forms of representative or central value to describe it. Measure of central tendency for ungrouped data – Mean, Mode and Median Range. The difference between the highest and the lowest observation of a data is called Range of the data. It gives us an idea of the spread of the observations.

### Mean median mode ungrouped data pdf

Mean, Median and Mode for Grouped Data, time: 7:06

Tags: Kritodasher nirban by tahsan adobeNais guy 50 dinara firefox, Mann ke moti 44 episode dailymotion er , , Out of your business raluka firefox Measures of Central Tendency: Mean, Median, and Mode Examples 1. Lesson Initiator – What is the purpose of finding an “average?” 2. In analyzing, statistical data, it is often useful to have numbers describe the complete set of data. “Measures of central tendency” are used because they represent centralized or middle values of the data. Find the mean of: 6,8,11,5,2,9,7,8 x = x n = 6+8+11+5+2+9+7+8 8 = 56 8 =7 Median The median value of a set of data is the middle value of the ordered data. That is, the data must be put in numerical order ﬁrst. Worked examples Find the median of the following: a) 11,4,9,7,10,5,6 Ordering the data gives 4,5,6, 7,9,10,11 and the middle value is 7. Ungrouped Data • Measures of central tendency yield information about “particular places or locations in a group of numbers.” • Common Measures of Location –Mode –Median –Mean –Percentiles –Quartiles Stat D, UCLA, Ivo Dinov 2 Mode • The most frequently occurring value in a data set • Applicable to all levels of data. 1. Mean, Median and Mode 2. First Quantile, third Quantile and Interquantile Range. Lecture 2 – Grouped Data Calculation. Apr 09, · ↪ Different forms of data need different forms of representative or central value to describe it. Measure of central tendency for ungrouped data – Mean, Mode and Median Range. The difference between the highest and the lowest observation of a data is called Range of the data. It gives us an idea of the spread of the observations. The median is the midpoint of that interval. The mode is the midpoint of the interval that occurs most frequently. = = b) mode Looking at the frequency column, we can see that the “” interval occurs most often. So, the mode is the midpoint of that interval, which is