A survey shows the preference (linking) of Different subject by student of class 6th.
subject : English, Hindi, Mathematics, science, social science.
no.of students : 50, 40, 75, 85, 50
Draw a Bar graph to illustrate the above data by taking 1 unit length = 10 student....
Answers
Students have already dealt with various types of data. In this chapter, they will learn more about data. The first portion of the chapter covers all the concepts related to the collection of data as well as its organisation. Now the question arises what is the need to study about collection and organization of data.The collection, recording, and presentation of data help us organize our experiences and draw inferences from them. The data that is collected needs to be organized in a proper table so that it becomes easy to understand and interpret. Other topics covered in this part of the chapter:Representative ValuesArithmetic MeanRangeModeMedianSome important points discussed in the chapter data handling are as follows:Arithmetic mean is one of the representative values of data. Average is the number that represents or shows the central tendency or representative values of data.Range is the difference between the highest and lowest observation which gives the idea of the spread of the observations.Mode is another form of central tendency or representative value. The mode of observation is the observation that occurs most often. Median is also a form of representative value. It refers to the value which lies in the middle of the data with half of the observations above it and other half below it. This chapter also provides an insight into the Bar Graphs. This includes drawing and interpreting double bar graphs as well. Choosing a scale is very important when it comes to bar graphs.A bar graph is a representation of numbers using bars of uniform widths. Students will be briefed about double bar graphs also. Double bar graph help to compare two collections of data at a glance.Chance and Probability is the last topic discussed in this chapter. It is a short but important topic as it forms the foundation of the probability to be studied in higher grades. Probability and chance depend on situations that are sure to happen, impossible to happen and some may or may not happen.
For topic wise assessment unsolved problems are given in the chapter. The chapter contains 4 unsolved exercises.
Answer:
Step-by-step explanation:
Data science is an inter-disciplinary field that uses scientific methods, processes, algorithms and systems to extract knowledge and insights from many structural and unstructured data. Data science is related to data mining, machine learning and big data.