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How do you find mean for a histogram?
You need to add all the values shown on the histogram and then divide that sum by the number of values (samples). Example: There are 5 values: A, B, C, D, E. Mean value is: (A+B+C+D+E) / 5
How do you find the mean of the data?
Th find the mean of a data set, you add up all the values in the data set and divide this sum by the number of data values. For example, the mean for the data set 2, 5, 6, and 7 is given as 2 plus 5 plus 6 plus 7, which is 20. You divide this sum by number of values in the data set, which is 4 to get 5 as the mean.
What is a median?
The median of a set of values is the quantity at the mid-point, when the values are in ascending numerical order. For example, the median of the numbers 1, 3, 5, 7, 9 is 5. When there is an even number of terms, the median is the mean of the middle two terms. For example, the median of the numbers 1, 3, 5, 7 is 4.
Explanation of exclusive method and inclusive method?
Am I right about this - Inclusive - This basically means that suppose in the interval - x - y The range starts from x and ends after y, that is including all possible values of y. So if we have a class interval 5 - 10 which is inclusive, then it will include 10.9999999999999999999999999999999999.... When constructing classes off this, since all values in the range of value 10 are included in 5 - 10, the next class should start from 11 to include new values. If it starts form 10, it will be invalid since it will include repetition of data. 0 - 5 6 - 11 12 - 17 etc... Exclusive - For an interval - x - y if this interval is exclusive, it will mean that values in this class starts from x and ends before y, that is it contains all values in the range of the constant y - 1. So subtraction is exclusive. For example class 5 - 10 will include values till 9.999999999999999999999999999999999 When constructing classes using exclusive intervals, we need to do it such that all possible values of variables come into it. So construction of exclusive classes will be like - 0 - 5 5 - 10 10 - 15 The reason for including 10 in the next class is cause first class does not contain values in the domain 10. By:- Himanshu Tripathi (himanshuiipm10@gmail.com)
For an odd number of data how is the median computed?
For an odd number of data values, the median is the middle number, the [(n+1)/2]th numberi.e. for 7 data values, (7 +1)/ 2 = 4, and the 4th is the middle value, or median.*For an even number of values, the median is the mean of the two middle numbers,i.e. one-half the sum of the two middle values (add n/2nd value and n/2+1st values and divide by 2).Examples:Median of 1, 3, 2 reordered as 1, 2, 3 = median 2Median of 6, 5, 3, 1 reordered as 1, 3, 5, 6 = median 4 (3+5 divided by 2)
