Pages

Monday 12 April 2021

Maths - Mead, Meadian, and Mode

 Writing a blog post explaining what mean, median, and mode mean. 


 

Mean-The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words, it is the sum divided by the count.

Identify - 10 + 10 + 10 = 30 divide by 3 = 10.

 This means 10 is the means  

when was it invented - The Belgian statistician Quetelet (1796-1874), famous as the inventor of l'homme moyen, the average man, was one of the first scientists to use the mean as the representative value for an aspect of a population.

 Median - The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values. 

Identify - 1, 3, 3, 6, 7, 8, 9

 Median = 6

when was it invented - Antoine Augustin Cournot in 1843 was the first to use the term median for the value that divides a probability distribution into two equal halves. 

 Mode - The mode is the value that appears most frequently in a data set. A set of data may have one mode, more than one mode, or no mode at all. Other popular measures of central tendency include the mean, or the average of a set, and the median, the middle value in a set.

Identify  - 1, 1, 1, 3, 5, 5, 7 

The mode is 1 because it appears more frequently on the set

when was it invented - An early use of the statistical concept of the mode was by English mathematician Karl Pearson (1857-1936) in 1895 when he stated that “I have found it convenient to use the term mode for the abscissa corresponding to the ordinate of maximum frequency”  



1 comment:

  1. This is a lot of work Zapa, Great job.

    ReplyDelete

To support my learning I ask you to comment as follows:
1. Something positive - something you like about what I have shared.
2. Thoughtful - A sentence to let us know you actually read/watched or listened to what I had to say
3. Something thoughtful - how have you connected with my learning? Give me some ideas for next time or ask me a question.

Note: only a member of this blog may post a comment.