How Will Science and Technology Improve Our Future?

Finding Average Graphically Marks across-the-board series| Conversion into absolute series| No. of students| Accumulative Frequency| (x)|  | (f)| (C. M)| 410-419| 409. 5-419. 5| 14| 14| 420-429| 419. 5-429. 5| 20| 34| 430-439| 429. 5-439. 5| 42| 76| 440-449| 439. 5-449. 5| 54| 130| 450-459| 449. 5-459. 5| 45| 175| 460-469| 459. 5-469. 5| 18| 193| 470-479| 469. 5-479. 5| 7| 200| The average amount of a alternation may be determinded through the clear presentation of abstracts in the anatomy of Ogives. This can be done in 2 ways. 1. Presenting the abstracts graphically in the anatomy of 'less than' ogive or 'more than' ogive . . Presenting the abstracts graphically and accompanying in the anatomy of 'less than' and 'more than' ogives. The two ogives are fatigued together. 1. Beneath than Ogive access Marks| Accumulative Abundance (C. M)| Beneath than 419. 5| 14| Beneath than 429. 5| 34| Beneath than 439. 5| 76| Beneath than 449. 5| 130| Beneath than 459. 5| 175| Beneath than 469. 5| 193| Beneath than 479. 5| 200| Steps complex in artful average application beneath than Ogive access - 1. Convert the alternation into a 'less than ' accumulative abundance administration as apparent aloft . 2. Let N be the absolute cardinal of acceptance who's abstracts is given. N will additionally be the accumulative abundance of the aftermost interval. Find the (N/2)th item(student) and mark it on the y-axis. In this case the (N/2)th item (student) is 200/2 = 100th student. 3. Draw a erect from 100 to the appropriate to cut the Ogive ambit at point A. 4. From point A area the Ogive ambit is cut, draw a erect on the x-axis. The point at which it touches the x-axis will be the average amount of the alternation as apparent in the graph. The average turns out to be 443. 94. 2. Added than Ogive access Added than marks| Accumulative Abundance (C. M)| Added than 409. 5| 200| Added than 419. 5| 186| Added than 429. | 166| Added than 439. 5| 124| Added than 449. 5| 70| Added than 459. 5| 25| Added than 469. 5| 7| Added than 479. 5| 0| Steps complex in artful average application added than Ogive access - 1. Convert the alternation into a 'more than ' accumulative abundance administration as apparent aloft . 2. Let N be the absolute cardinal of acceptance who's abstracts is given. N will additionally be the accumulative abundance of the aftermost interval. Find the (N/2)th item(student) and mark it on the y-axis. In this case the (N/2)th item (student) is 200/2 = 100th student. 3. Draw a erect from 100 to the appropriate to cut the Ogive ambit at point A. . From point A area the Ogive ambit is cut, draw a erect on the x-axis. The point at which it touches the x-axis will be the average amount of the alternation as apparent in the graph. The average turns out to be 443. 94. 3. Beneath than and added than Ogive access Another way of graphical assurance of average is through accompanying clear presentation of both the beneath than and added than Ogives. 1. Mark the point A area the Ogive curves cut anniversary other. 2. Draw a erect from A on the x-axis. The agnate amount on the x-axis would be the average value.

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