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C. State whether the following statement is true or false.
1. The median is always one of the numbers in a data. ...............................
2. The value of P(E) is greater than 1. ...............................
3. Mode of the data is always from the given data. ...............................
4. Mean of the data is always from the given data. ...............................
5. A double bar graph can be used to compare information related to two data. ...............................
D. Fill in the blanks.
1. When the given data is arranged in ascending or descending order, then the middle most observation
is the .................. of the data.

2. The mean of first five prime numbers is ..........................
3. The median of the observation 3, 4, 5, 6, 7, 3, 4 is ............................

4. Mean, median, and mode are the measures of ......................
5. The number of times an observation is repeated is known as the ...............of that observation.

6. The mean of the first ten even natural numbers is .................................
E. Answer the following.

1. A die was thrown 19 times and the outcomes recorded were: 6, 4, 2, 5, 3, 4, 1, 2, 6, 4, 2, 2, 3, 1, 5, 6,
1, 2, 3. Find the mean, median, and mode of the data.

2. A die is rolled 60 times, and the number 6 comes up 18 times. Find the probability of getting:

(a) a six (b) not a six
3. The mean of 5 numbers is 11. If four of them are −3, 8, 10 and 15, find the fifth number.
4. The mean income of a worker in first five days of a month is `816. In first four days his incomes
were `810, `830, `750 and `910. Find his income on the fifth day.

5. The mean of six numbers is 196. It was found later that two numbers 18 and 34 were wrongly written
as 81 and 43. Find the correct mean.

6. The mean of four numbers is 36. If one of the numbers is included, the mean becomes 45. Determine
the included number.
7. Find the value of x, if the median of the following data arranged in ascending order is 19.5.

3, 7, 8, 11, 15, x, x + 3, 27, 28, 39, 45, 51.
8. The following table represent the Maximum Life Span of Animals in Captivity.

Animal Elephant Monkey Lion Dog Horse Giraffe
Life Span (in years) 80 24 32 14 30 48
Use the given data and construct a bar graph.

9. The data given below shows the production of cars in a factory for first six months of two years
2023 and 2024.

Months Jan Feb March Apr May June
2023 2800 2700 2400 1800 2400 3000

2024 2400 3000 2100 2400 1500 4800

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