Everyday we come across a wide variety of information’s in the form of facts, numerical figures, tables, graphs, etc. These figures are the numerical data collected with a definite purpose, are
called data. Data is a word in a plural form of the Latin word datum. Every part of our lives utilizes data in one form or the other. This extraction of significant information is studied in a
branch of mathematics called Statistics.
Solving Basic Statistics Problems-statistics Definition
Basically the word ‘statistics’ appears to have been taken from the Latin word ‘status’ meaning ‘a state (related to a political)’. In its origin, statistics is simply the collection of data on different aspects of the life of people, useful to the State. Basic Statistics deals with collection, organization, analysis and Interpretation of data. The word ‘statistics’ has held different meanings in different contexts, so that the calculation process is based on the meaning and data’s.
Solving Basic Statistics Problems
Example for basic stastistics problems:
Consider the marks obtained by 10 pupils in a mathematics test as given below:
55 36 95 73 60 42 25 78 75 62
The data in this form is called raw data.
By looking in this way, can you find the highest and the lowest marks?
Did it take you some time to search for the maximum and minimum marks? Wouldn’t it be a lesser amount of time consuming if these scores were arranged in ascending or descending order? So let us arrange the marks in ascending order as
25 36 42 55 60 62 73 75 78 95
Now, we can clearly watch that the lowest marks are 25 and the highest marks are 95.
The difference of the highest and the lowest marks in the basic stastistics data is called the range of the data. So, the range in this case is 95 – 25 = 70.
Arrangement of data in ascending or descending order can be quite time consuming, particularly when the number of observations in an experiment is large.