In a school, the total number of students from class VII to X is 1080, as shown in the pie graph . How many students are there in total in class IX and X?
405
Total angle in pie chart = 360° corresponds to 1080 students, so 1° corresponds to 1080/360 = 3 students.
Class IX + Class X angle = 75° + 60° = 135°.
Number of students = 135 × 3 = 405. Answer: (B).
Important Questions from Classification of Data
A set of annual numerical data, comparable over the years, is given for the last 12 years.
Consider the following statements:
1. The data is best represented by a broken line graph, each corner (turning point) representing the data of one year.
2. Such a graph depicts the chronological change and also enables one to make a short-term forecast.
Which of the above statements is/are correct?Consider the following statements:
Statement 1: Range is not a good measure of dispersion.
Statement 2: Range is highly affected by the existence of extreme values.
Which one of the following is correct in respect of the above statements?
Data can be represented in which of the following forms?
1. Textual form
2. Tabula form
3. Graphical form
Select the correct answer using the code given below.Which statement of the following is incorrect?
When the collected data is grouped with reference to time, we have
