Practice set 7.3 algebra 9th

Here, we bring to you detailed answers to the exercises of Chapter 7 Statistics. Subject matter experts who created the solutions have collected these questions for you to revise from the chapter 7 practice set 7.3 algebra 9th 9th Maths Maharashtra Board Textbook. This chapter of Maharashtra State Board Class 9 Solutions deals with sub-divided bar-diagram, Grouped and ungrouped frequency distribution, Percentage bar-diagram, Cumulative frequency distribution, Primary and secondary data, Mean, practice set 7.3 algebra 9th, Median and Mode for ungrouped data and data collection. The following table shows the number of Buses and Trucks in nearest lakh units.

Question 1. For class interval 20 — 25 write the lower class limit and the upper class limit. Question 2. Find the class-mark of the class Question 3.

Practice set 7.3 algebra 9th

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If class-mark is 10 and class width is 6, then find the class. Mode is the most frequently occurring observation.

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Question 1. For class interval 20 — 25 write the lower class limit and the upper class limit. Question 2. Find the class-mark of the class Question 3. If class-mark is 10 and class width is 6, then find the class. Solution: Let the upper class limit be x and the lower class limit be y. Question 4.

Practice set 7.3 algebra 9th

Prove that:. Show that:. Ans: It is given that. Sides opposite to equal angles of a triangle are equal. Show that these altitudes are equal. Show that.

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If the classes are , , … then in which class should the observation 10be included? Information of attendance of every student collected by visiting every class in a school. Find the salary of the office superintendent. One of the observations was removed from the data, hence the mean became The median of these observations is FREE Signup. The mean of 35 observations is 20, out of which mean of first 18 observations is 15and mean of last 18 observation is Meanwhile, the questions and the solutions are also available online on our webpage. There are 68 students of 9th standard from model Highschool, Nandpur. This is found by adding the numbers in a data set and dividing by how many numbers there are. Question 1. Prepare a frequency distribution table of the data. What is the class-mark of class ?

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By taking classes — , — , — … prepare grouped frequency distribution table. The mean salary of 20 workers is Rs. Review the cleanliness status of canals by actually visiting them. Share Share Share Call Us. Question 1. What is the class-mark of class ? Question 4. They have scored following marks out of 80, in written exam of mathematics. The value of n upto 50 decimal places is given below: 3. Find the mode of the data. What is the median of 7, 10, 7, 5, 9, 10? What is the cumulative frequency of equal to or more than type of the class ? What was the correct mean? Question 7. Construct the frequency tables taking inclusive and exclusive classes.