Given below are the marks obtained by 40 students in an examination: In 0 — 10, both 0 and 10 are included. After collecting data, it needs to be organized hence the need to separate grouped data from ungrouped data. Examples include how many bags of maize collected during the rainy season were bad.
The mean of grouped data is preferred because it is more accurate as compared to the mean of ungrouped data. Data is categorized in numbers or characteristics therefore, the data which has not been put in any of the categories is ungrouped.
Grouped Data Grouped data is data that has been organized into groups known as classes. For example, when conducting census and you want to analyze how many women above the age of 45 are in a particular area, you first need to know how many people reside in that area.
Alternatively, the grades can be used. All the classes may have the same class size or they may have different classes sizes depending on how you group your data. This class interval is very important when it comes to drawing Histograms and Frequency diagrams.
Data is raw facts and figures that do not have meaning.
Thus, we have classes of the form 0 — 10, 11 — 20, 21 — 30 etc. For example, if you were collecting the ages of the people you met as you walked down the street, you could group them into classes as those in their teens, twenties, thirties, forties and so on. Helps in improving the efficiency of estimations.
The figure n the left side of a class is called its lower limit and that on its right is called its upper limit.
Ungrouped Data Frequency tables are used to show the information of grouped data whereas in the case of ungrouped data, the information appears like a big list of of numbers.
Would you like to merge this question into it?Median for Ungrouped Data. From KineticMaths. Jump to: navigation, search. The Median. The median is the middle value in an ordered array of numbers.
To calculate the median value we should first consider the following steps: Arrange the data as an ordered array. Apr 16, · The word data refers to information that is collected and recorded. It can be in form of numbers, words, measurements and much more.
There are two types of data and these are qualitative data and quantitative data. The difference between the two types of data is that quantitative data is used to describe numerical.
Data in statistics can be classified into grouped data and ungrouped data. Any data that you first gather is ungrouped data.
Ungrouped data is data in the raw. An example of ungrouped data is a any list of numbers that you can think of. Grouped Data.
Grouped data is data that has been organized into groups known as classes. Unlike ungrouped data, grouped data has been organized into several groups. To create grouped data, the raw data is sorted into groups, and a table showing how many data points occur in each group.
Difference Between Grouped and Ungrouped Data Mean, Mode, Median, Range Worksheet, information handling revision from GCSE Maths Tutor Measures of Central Tendency5/5(1). Sep 12, · This feature is not available right now.
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