Class 10th Ncert 8.1 Data
Exercise Ex A survey was conducted by a Class 10th Ncert 8.1 Data group of students as a part of their environment awareness programme, in which they collected the following data regarding Class 10th Ncert 8.1 Data the number of plants in 20 houses in a Class 10th Ncert 8.1 Data locality. Find the mean number of plants per house. Which Class 10th Ncert 8.1 Data method did you use for finding the mean, and Class 10th Ncert 8.1 Data why?
You can also download the free PDF of Ex Class 10th Ncert 8.1 Data Consider the following distribution of daily wages of 50 workers of a factory. Find the mean daily wages of the workers of the factory by using an appropriate method.
The following distribution shows the daily class 10th ncert Class 10th Ncert 8.1 Data 8.1 data allowance of children of a locality. Find the missing frequency f.
Thirty class 10th ncert 8.1 data were examined in a hospital by a doctor and the number of heart beats per minute Class 10th Ncert 8.1 Data were recorded and summarised as follows. Find the mean heart beats per minute for these women, choosing a suitable method Solution:. In a retail market, fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying number of mangoes.
The following was the distribution of mangoes according to the number of boxes. Find the mean number of mangoes kept in a packing box. Which method Class 10th Ncert 8.1 Data of finding the mean did you choose? The table Class 10th Ncert 8.1 Data below shows the daily expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method. To find out the concentration of SO2 in the air in parts per million, Class 10th Ncert 8.1 Data i.
A class teacher has the following absentee record of 40 students of a class 10th ncert 8.1 data for the whole term. Find the mean number of days a student was absent. The following table gives the literacy rate in percentage of 35 cities. Find Class 10th Ncert 8.1 Data the mean literacy rate. Class limits : Suppose mark obtained by Class 10th Ncert 8.1 Data all of the students are divided into class intervals 25 � 35, 35 � 45 and so interval on. In class interval 25 � 35, 25 is called Class 10th Ncert 8.1 Data lower class limit and 35 is called upper class limit.Class 10th Ncert 8.1 Data
Class size : The difference between upper and lower class limit. Class mark class 10th ncert 8.1 data It is given by. The data obtained in original form are called raw data class 10th ncert 8.1 Data Ncert 8.1 Class 10th Class 10th Ncert 8.1 Data data ungrouped data. To put the data in a more Class 10th Ncert 8.1 Data condensed form, we make groups of suitable size, and mention the frequency of each group.
Such a table is Class 10th Ncert 8.1 Data called grouped data. The class with the maximum frequency Class 10th Ncert 8.1 Data is called modal class. Median is a measure of central tendency which gives the value of the middle-most observation in the data. The curve so obtained is called a Class 10th Ncert 8.1 Data cumulative frequency curve, or an ogive of the less Class 10th Ncert 8.1 Data than type. The curve so obtained is called a cumulative frequency curve, or class 10th ncert 8.1 data ogive of the more than type.
The two ogives will intersect each other at a point. From this point, if we draw a perpendicular on the x-axis, the Class 10th Ncert 8.1 Data Class 10th Ncert 8.1 Data point at which it cuts the x-axis gives us the median. From this point on y-axis, draw a line parallel to x-axis cutting the less than ogive at a Class 10th Ncert 8.1 Data point. From this point draw a perpendicular on the Class 10th Ncert 8.1 Data x-axis, the point at which the perpendicular cuts the x-axis Class 10th Ncert 8.1 Data gives us the median.
Solution: Ex Find the mean Class 10th Ncert 8.1 Data heart beats per minute for these women, choosing a suitable method Solution: Ex Solution: Class 10 Maths Statistics Mind Maps Basic Terms Class limits : Suppose mark obtained by all of the students are divided into class intervals 25 � 35, 35 � 45 and so interval on. Class mark : It is given by Ungrouped and Grouped Data The data obtained in original form are called raw data or ungrouped data.
Median Median is a measure of Class 10th Ncert 8.1 Data class 10th ncert 8.1 data tendency which gives Class 10th Ncert 8.1 Data the value of the middle-most observation in the data. Class 10th ncert 8.1 data by Graph i Draw the ogive of the Ncert Solutions Class 10th Physics Chapter Light Data less than type and ogive of Class 10th Ncert 8.1 Data the more than type on the same axis.
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