T.R. Jain and V.K. Ohri Solutions for Class 11 Statistics for Economics Chapter 4 – Organisation of Data is regarded as an important concept to be studied thoroughly by the students. Here, we have provided T.R. Jain and V.K. Ohri Solutions for Class 11.
|Subject||Statistics for Economics|
|Chapter Name||Organisation of Data|
|Number of questions solved||02|
|Category||T.R. Jain and V.K. Ohri|
Chapter 4: Organisation of data covers the following mentioned concepts:
- What is the classification of data?
- Concept of variable
- Conversion of raw data into statistical series
- Types of frequency distribution
T.R. Jain and V.K. Ohri Solutions for Class 11 Statistics for Economics Chapter 4 – Organisation of Data
Convert the following cumulative frequency series into a simple frequency series:
- 4 students obtained less than 10 marks
- 20 students obtained less than 20 marks
- 40 students obtained less than 30 marks
- 48 students obtained less than 40 marks
- 50 students obtained less than 50 marks
Conversion of cumulative frequency series into a simple frequency series
|Cumulative Frequency Series||Simple Frequency Series|
|Marks less than||Number of students||Marks||Number of students|
|20||20||10-20||20-4 = 16|
|30||40||20-30||40-20 = 20|
|40||48||30-40||48-40 = 8|
|50||50||40-50||50-48 = 2|
30 Students of Class XI obtained following marks in economics. Classify the data in the form of individual series, discrete series, continuous series and cumulative frequency series.
Cumulative frequency series:
|Marks||No. of Students||Marks||No. of Students|
|Less than 15||0||More than 12||30|
|Less than 19||9 + 4 =13||More than 16||30 – 4 =26|
|Less than 23||13 + 9 =22||More than 20||26 – 9 =17|
|Less than 27||22 + 8 = 30||More than 24||17 – 9 =8|
Also Check: What is Classification of data?
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