Class 8 Quiz Level 3 (Difficult) – Data Handling

Total questions: 10

A coin is tossed $5$ times. What is the probability of getting at least $3$ heads?

Topic: Probability

Deselect Answer

$\dfrac{1}{16}$

$\dfrac{5}{16}$

$\dfrac{13}{32}$

$\dfrac{19}{32}$

None

A survey of $50$ students revealed that the average marks scored in Math is $72$ with a standard deviation of $8$. If the marks are normally distributed, approximately how many students scored between $64$ and $80$?

Topic: Probability

Deselect Answer

$34$

$38$

$40$

$42$

None

The range of the data set $12, 20, 32, 40, 18, 24, 28$ is:

Topic: Organizing Data

Deselect Answer

$18$

$28$

$30$

$40$

None

In a school, $60$ students appeared for a Math test. The mean of the top $10$ students is $85$, and the mean of the remaining $50$ students is $65$. What is the mean of all $60$ students?

Topic: Measures of Central Tendency

Deselect Answer

$67.5$

$70$

$72.5$

$75$

None

The mode of the data $5, 8, 8, 9, 12, 15, 8, 7$ is:

Topic: Measures of Central Tendency

Deselect Answer

$8$

$9$

$12$

None of the above

None

The probability of an event is $0.4$. What is the probability of the complementary event?

Topic: Probability

Deselect Answer

$0.6$

$0.4$

$0.8$

$1.4$

None

Find the mean of the following data: $10, 12, 14, 16, 18, 20$.

Topic: Measures of Central Tendency

Deselect Answer

$15$

$16$

$14$

$17$

None

In a set of data, the mean is $45$, the median is $50$, and the mode is $55$. What is the nature of the distribution of this data?

Topic: Measures of Central Tendency

Deselect Answer

Symmetric

Positively skewed

Negatively skewed

Cannot be determined

None

If the probability of an event occurring is $\dfrac{1}{5}$, what is the probability of the event not occurring?

Topic: Probability

Deselect Answer

$\dfrac{4}{5}$

$\dfrac{1}{5}$

$\dfrac{3}{5}$

$\dfrac{2}{5}$

None

10.

The average height of $5$ students in a class is $150$ cm. If one more student joins the class with a height of $160$ cm, what will be the new average height?

Topic: Organizing Data

Deselect Answer

$151$ cm

$152$ cm

$153$ cm

$154$ cm

None

1 out of 10

Class 8 Quiz Level 3 (Difficult) – Data Handling

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