Question

For a pollution free envviroment, trees play an important part and it is emphasized to plant as many trees as possible. you also must have planted plants in your school. one of the schools surveyed the plants they had planted in terms of their heights and recorded the following information.Height (in cm) No. of treesLess than 7. 26 Less than 14. 55Less than 21. 92Less than 28. 140Less than 35. 216Less than 42. 298Less than 49. 338Less than 56. 360(1) Represent the data as a grouped frequency data.(2) Find the mode of the data. What does mode represent?​

Answer 1

More Than Cumulative Frequency distribution table & Graph Of more Than Ogive Is In The Attachment.

From the table : Plot these points  (0,360) , (7,334) , (14,303) , (21,268)  (28,226) , (35,144) , (42,73) , (49,54). by taking upper class limit over the x-axis and cumulative frequency over the y-axis.

★★ MORE THAN TYPE OGIVE:

It is the graph drawn between lower limits and cumulative frequencies of a distribution. Here we mark the points with lower limit and x- coordinate and corresponding cumulative frequency and y- coordinate and join them by freehand smooth curve. This type of graph is cumulated downward.

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