As we know about the data is collection in calculated form. The collection, recording and presentation of data help us organize our experiences and draw inferences from them.
Hear You will learn across some more kinds of data and graphs.
Data can be row or mixed but whenever we make collection of data. We should know about data types. So, before collecting data, we need to know what we would use it for.
Because of collection of data may not give us a specific information related to that data.
Whenever we collect any data, we have to record and organize it. There are many kinds of data like our school rolls, progress report, index in the notebooks, temperature record and many others are all in tabular form.
So, in this section we learn about whenever we put any data in a proper table it becomes easy to understand and interpret that's called organizing of data.
While we organize the collected data in tabular or graph-bar Graphs, we also find the Score or attendance rate or run rate etc. So finding this value is the term of average.
We can say that we Representing the values what we collected.
While we representative value of a group of data is known as arithmetic mean or the mean.
The average or Arithmetic Mean (A.M.) or simply mean is defined as follows:
Mean = Sum of all observations/number of observations
Range
The difference between the highest and the lowest observation gives us an idea of the
spread of the observations. This can be found by subtracting the lowest observation from the highest observation. We call the result the range of the observation.
When we measure of central tendency or the only form of representative values known as Mean. Different requirements from a data use other measures of central tendencies.
The mode of a set of observations is the observation that occurs most often.
As have seen that in some situations, arithmetic mean is an appropriate measure of central tendency whereas in some other situations, mode is the appropriate measure of central tendency. Here Median refers to the value which lies in the middle of the data (when arranged in an increasing or decreasing order) with half of the observations above it and the other half below it.
In a given data, arranged in ascending or descending order, the median gives us the middle observation.
101, 102, 106, 109, 110, 110, 112, 115, 115, 115, 115, 115, 117, 120, 120, 123, 125
As we have learnt about the Bar graphs or graph (visual representation of data in pictographs) in pervious class, here we learn how the graph can be use for represent the different way for different data.
We can use the bar graphs to show deductions or losses of data and gain or incremented of data.
For representing of data in graphs we can choose any unit that suitable against the data that we represent.
Probability is the method in mathematics where we know about the possible or predictions of outcomes when we do something. Like- how many chance of true-false