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Wednesday 29 March 2017
Tuesday 28 March 2017
Monday 27 March 2017
CBSE Class 9 - Mathematics - CH 14: Statistics - Important Points
Statistics - Important Points
CBSE Class 9 - Mathematics
① In statistics we study collection, presentation analysis and interpretation of data.② Facts or figures collected with a definite purpose are called data.
③ Data are fundamental. Statistical tests are performed on raw not manipulated data.
④ The number of times an observation occurs in the given data is called frequency of the observation.
⑤ Class intervals are the groups in which all observations are divided.
Saturday 25 March 2017
CBSE Class 6 Maths - Knowing Our Numbers - NCERT Ex 1.2 (#cbsenotes)
Knowing Our Numbers
NCERT Ex 1.2 Solutions
CBSE Class 6 Maths
Q1. A book exhibition was held for four days in a school. The number of tickets sold at the counter on the first, second, third and final day was respectively 1094, 1812, 2050 and 2751. Find the total number of tickets sold on all the four days.
Answer:
Number of tickets sold on first day = 1,094
Number of tickets sold on second day = 1,812
Number of tickets sold on third day = 2,050
Number of tickets sold on fourth day = 2,751
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Total tickets sold = 7,707
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∴ 7,707 tickets were sold on all the four days.
Q2: Shekhar is a famous cricket player. He has so far scored 6980 runs in test matches. He wishes to complete 10,000 runs. How many more runs does he need?
Answer:
Runs to achieve = 10,000
Runs scored = – 6,980
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Runs required = 3,020
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∴ he needs 3,020 more runs.
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