Introduction to learning practice of statistics :
Statistics may be defined as the science of collection, presentation, analysis and interpretation of numerical data. Information is collected, presented and organized in the form of tables, graphs etc analyzed and then inferences are drawn from them. Statistical method is a technique used to obtain, analyze, summarise, compare and present the numerical data.Learning Statistics in the singular is a science which investigate the statistical methods and deals with their application. I like to share this Degrees of Freedom Statistics with you all through my article.
Definition for some statistical terms for learning practice of statistics
Data:
The collection of a particular type of information in the form of numerical figures is called, a set of data. This set of data obtained in the original form is called a set of raw data. Each numbered figure in the set of data is called an observation.
Ex: 35, 28, 26, 30, 32, 35, 26, 31, 36, 28
Array:
It is very difficult to draw any inference from this raw set of data. So we arrange it in ascending or descending order of size. The above set of data arranged in ascending order is:
Ex: 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 30 ,31.
Mean:
The arithmetic mean in statistics is the same as 'average' in arithmetic.
Mean of Ungrouped or Raw data:
The mean of a set of data is found out by dividing the sum of all the observations by the total number of observations in the date. We denote the mean by x' (read “x bar”).
Mean = sum of observations / number of observations
Median:
The median of a set of numbers is the middle number when all the numbers are arranged in order of size. ie. In descending or ascending order.
Mode:
The mode of a set of numbers is the number which occurs most frequently in the set. If no number occur more than once, the set of data Is said to have no mode. If different numbers occur the same number of times, the set of data has more than one mode. Having problem with how to long divide decimals keep reading my upcoming posts, i will try to help you.
Let us see some practice problems on these.
learning practice of statistics - Example problems
1) find the mean and median of the following number 39, 37, 38, 28, 30, 35, 36.
Solution:
Mean = 39+37+38+28+30+35+36 / 7
= 34.7
Median = 39, 38, 37, 36, 35, 30, 28
= 36
2) find the mode of the following number 52, 58, 58, 58, 65, 73, 73, 73.
Solution:
two modes: 58 and 73.
Statistics may be defined as the science of collection, presentation, analysis and interpretation of numerical data. Information is collected, presented and organized in the form of tables, graphs etc analyzed and then inferences are drawn from them. Statistical method is a technique used to obtain, analyze, summarise, compare and present the numerical data.Learning Statistics in the singular is a science which investigate the statistical methods and deals with their application. I like to share this Degrees of Freedom Statistics with you all through my article.
Definition for some statistical terms for learning practice of statistics
Data:
The collection of a particular type of information in the form of numerical figures is called, a set of data. This set of data obtained in the original form is called a set of raw data. Each numbered figure in the set of data is called an observation.
Ex: 35, 28, 26, 30, 32, 35, 26, 31, 36, 28
Array:
It is very difficult to draw any inference from this raw set of data. So we arrange it in ascending or descending order of size. The above set of data arranged in ascending order is:
Ex: 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 30 ,31.
Mean:
The arithmetic mean in statistics is the same as 'average' in arithmetic.
Mean of Ungrouped or Raw data:
The mean of a set of data is found out by dividing the sum of all the observations by the total number of observations in the date. We denote the mean by x' (read “x bar”).
Mean = sum of observations / number of observations
Median:
The median of a set of numbers is the middle number when all the numbers are arranged in order of size. ie. In descending or ascending order.
Mode:
The mode of a set of numbers is the number which occurs most frequently in the set. If no number occur more than once, the set of data Is said to have no mode. If different numbers occur the same number of times, the set of data has more than one mode. Having problem with how to long divide decimals keep reading my upcoming posts, i will try to help you.
Let us see some practice problems on these.
learning practice of statistics - Example problems
1) find the mean and median of the following number 39, 37, 38, 28, 30, 35, 36.
Solution:
Mean = 39+37+38+28+30+35+36 / 7
= 34.7
Median = 39, 38, 37, 36, 35, 30, 28
= 36
2) find the mode of the following number 52, 58, 58, 58, 65, 73, 73, 73.
Solution:
two modes: 58 and 73.
