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I have been teaching for the past 30 years. I currently run two coaching centers, one in Indirapuram, Ghaziabad and one in NOIDA. Class 10 forms the...
UNIT VII: Statistics and probability Lessons
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Post a LessonAnswered on 19/04/2024 Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Statistics
Sadika
To find the median for a frequency distribution, we need to use the relationship between the mean, median, and mode in a symmetrical distribution.
In a symmetrical distribution:
Given that the mode is 7.88 and the mean is 8.32, we can see that they are not equal. This suggests that the distribution is not perfectly symmetrical.
However, we can still estimate the median based on the mode and mean using the following relationship:
Answered on 19/04/2024 Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Probability
Sadika
To find the probability of drawing a card with a number less than 10, we need to determine the total number of favorable outcomes (cards with numbers less than 10) and divide it by the total number of possible outcomes (total number of cards).
Answered on 19/04/2024 Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Probability
Sadika
In a standard deck of 52 playing cards, there are 2 black queens: the queen of spades and the queen of clubs.
Total number of possible outcomes (total number of cards): There are 52 cards in a standard deck.
Total number of favorable outcomes (black queens): There are 2 black queens in the deck.
Now, let's calculate the probability of drawing a black queen:
Probability=Number of favorable outcomesTotal number of possible outcomes
Answered on 19/04/2024 Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Probability
Sadika
To find the probability of getting a black ball, we need to consider the total number of balls in the bag and the number of black balls.
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