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Maths 1 Marks Question

Statistics and Probability · Jharkhand Board (JAC) STD 9 (Jharkhand - English Medium). 5 questions.

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1 Marks Question

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5 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
A child says that the median of $3, 14, 18, 20, 5$ is $18.$ What doesn’t the child understand about finding the median$?$
Answer
Before finding the median of the data, data has to be arranged in ascending or descending order.
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Question 21 Mark
Can the experimental probability of an event be greater than 1? Justify your anwer.
Answer
No, since the number of trials in which the event can happen cannot be greater than the total number of trials.
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Question 31 Mark
Can the experimental probability of an event be a negative number? If not, why?
Answer
No, since the number of trials in which the event can happen cannot be negative and the total number of trials is always positive.
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Question 41 Mark
Is it correct to say that in a histogram, the area of each rectangle is proportional to the class size of the corresponding class interval? If not, correct the statement.
Answer
The given statement is not correct. In a histogram, the area of each rectangle is proportional to the frequency of its class.
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Question 51 Mark
As the number of tosses of a coin increases, the ratio of the number of heads to the total number of tosses will be $\frac{1}{2}.$ Is it correct? If not, write the correct one.
Answer
No, since the number of coin increases, the ratio of the number of heads to the total number of tosses will be nearer to $\frac{1}{2}$ but not exactly $\frac{1}{2}.$
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1 Marks Question - Maths STD 9 Questions - Vidyadip