Grouping of Data In this lesson we will learn about the grouping of data. Grouped data are data that has been organized in groups known as classes. Grouped data has been classified and a data class is group of data. Consider the marks obtain by 15 students in a history test as given below, 23, […]
Read More →Frequency Polygon A frequency polygon is very similar to a histogram and represents the graphical form of data. A frequency polygon is used to show a cumulative frequency distribution or compare to sets of data. In a frequency polygon the number of observations is marked at the the midpoint […]
Read More →Find Mode by Histogram In this tutorial, we will learn, how to find mode of a given observation with the help of a histogram. First we know about mode. What is mode? Definition: The mode of a data set is the value, occurring most frequently in set of observations. In other words, a data set having highest […]
Read More →Word Problems on Grouped data (1) The blood group of 30 students of class v are recorded as follows. Represent this data in a frequency distribution table. Which is the most common and which is the rarest, blood group among these students. A, O, AB, O, A, B, O, A, A, AB, A, B, O, A, […]
Read More →Histogram A histogram is from of graphical representation of grouped frequency distribution with continuous classes. In a histogram data represents like the bar graph, but it there is no gap between rectangular bars. The rectangular bars show the area of proportional to the corresponding frequency of a variable and the width of the bars represents […]
Read More →Pictograph There are many methods of representing statistical data pictorially. One of them is picture symbols or icons. Interpreting the picture graph means drawing some conclusions from it. In graph theory, a “Pictograph” is a graph that represent (numerical) statistical data through pictures symbols or icons. A pictograph […]
Read More →Mode – Definition – Examples In this tutorial, we shall learn about mode and how to find mode of a given observation. Definition: The mode of a data set is the value, occurring most frequently in set of observations. In other words, a data set having highest frequency of observations is its mode. How to find […]
Read More →Mean of Grouped Data 1. The mark obtained by 30 students of class 6th in physics paper consisting of 100 marks are given in below table. Find the mean of marks obtained by the students? Marks obtained xi 10 20 36 40 50 56 60 70 72 80 88 92 95 Number ofstudents fi 1 1 […]
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