सांख्यिकी - L5 | बारम्बारता बहुभुज | Class 9 NCERT गणित | Chapter 14 | Amit Sir | Doubtnut

NEET 2020 - Revision In 60 Days | NCERT Class 11 Chapter 5 Morphology of Flowering Plant | NEET Biology Revision

The average age of 30 students of a class is 14 years 4 months. After admission of 5 new student in the class the average becomes 13 years 9 months. The youngest one of the five new students is 9 years 11 months old. The average age of the remaining 4 new students is :

Ecosystem /Class 12/NCERT/Chapter 14/Ecology/Quick Revision Series/NEET/AIIMS/JIPMER

You have studied in Class IX,(Chapter 9. Example 3), that a median of a triangle divides it into two triangles of equal areas.Verify this result for AABC whose vertices are A(4,-6),B(3,-2) and C(5,2)

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10. (ii) How many children watched television for 15 or more hours a week?

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9. M a r k s"N u m b e r o f S t u d e n t s"0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51 Draw a freque

Refer to Example 5, Section 14.4, Chapter 14. Find the probability that a student of the class was born in August.

The distance (in km) of 40 engineers from their residence to their place of work were found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 12 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation?