The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

Remains the same as that of the original set.

is two times of the original number

Remains the same as that of the original set.

While computing mean of grouped data, we assume that the frequencies are [NCERT Exemplar Problems]

centred at the classmarks of the classes

evenly distributed over all the classes

centred at the classmarks of the classes

centred at the upper limits of the classes

centred at the lower limits of the classes

CBSE Class 10 Maths Statistics Quiz 1

5.

The times, in seconds, taken by 150 atheletes to run a 110 m hurdle race are tabulated below:

Class Frequency

13.8 – 14.0 2

14.0 – 14.2 4

14.2 – 14.4 5

14.4 – 14.6 71

14.6 – 14.8 48

14.8 – 15.0 20

The number of atheletes who completed the race in less then 14.6 seconds is:

11

71

82

130

1.

Cumulative frequency curve is also called

2.

The relationship between mean, median and mode for a moderately skewed distribution is

3.

The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

4.

Mode and mean of a data are 12k and 15A. Median of the data is

5.

The times, in seconds, taken by 150 atheletes to run a 110 m hurdle race are tabulated below:

Class Frequency

13.8 – 14.0 2

14.0 – 14.2 4

14.2 – 14.4 5

14.4 – 14.6 71

14.6 – 14.8 48

14.8 – 15.0 20

The number of atheletes who completed the race in less then 14.6 seconds is:

6.

The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its

7.

Mean of n numbers x₁, x₂, … x_n is m. If x_n is replaced by x, then new mean is

8.

While computing mean of grouped data, we assume that the frequencies are [NCERT Exemplar Problems]

9.

Mean of 100 items is 4 It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is

10.

The times, in seconds, taken by 150 atheletes to run a 100 m hurdle race are tabulated below:

Class Frequency

13.8-14 3

14 – 14.2 4

14.2 – 14.4 6

14.4 – 14.6 69

14.6 – 14.8 48

14.8 – 15.0 20

The number of atheletes who completed the race in less than 14.6 seconds is

Time

Class	Frequency
13.8 – 14.0	2
14.0 – 14.2	4
14.2 – 14.4	5
14.4 – 14.6	71
14.6 – 14.8	48
14.8 – 15.0	20

Class	Frequency
13.8-14	3
14 – 14.2	4
14.2 – 14.4	6
14.4 – 14.6	69
14.6 – 14.8	48
14.8 – 15.0	20

1. Cumulative frequency curve is also called

2. The relationship between mean, median and mode for a moderately skewed distribution is

3. The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

4. Mode and mean of a data are 12k and 15A. Median of the data is

5. The times, in seconds, taken by 150 atheletes to run a 110 m hurdle race are tabulated below: Class Frequency 13.8 – 14.0 2 14.0 – 14.2 4 14.2 – 14.4 5 14.4 – 14.6 71 14.6 – 14.8 48 14.8 – 15.0 20 The number of atheletes who completed the race in less then 14.6 seconds is:

6. The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its

7. Mean of n numbers x1, x2, … xn is m. If xn is replaced by x, then new mean is

8. While computing mean of grouped data, we assume that the frequencies are [NCERT Exemplar Problems]

9. Mean of 100 items is 4 It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is

10. The times, in seconds, taken by 150 atheletes to run a 100 m hurdle race are tabulated below: Class Frequency 13.8-14 3 14 – 14.2 4 14.2 – 14.4 6 14.4 – 14.6 69 14.6 – 14.8 48 14.8 – 15.0 20 The number of atheletes who completed the race in less than 14.6 seconds is

Time

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1.

Cumulative frequency curve is also called

2.

The relationship between mean, median and mode for a moderately skewed distribution is

3.

The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

4.

Mode and mean of a data are 12k and 15A. Median of the data is

5.

The times, in seconds, taken by 150 atheletes to run a 110 m hurdle race are tabulated below:

Class Frequency

13.8 – 14.0 2

14.0 – 14.2 4

14.2 – 14.4 5

14.4 – 14.6 71

14.6 – 14.8 48

14.8 – 15.0 20

The number of atheletes who completed the race in less then 14.6 seconds is:

6.

The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its

7.

Mean of n numbers x₁, x₂, … x_n is m. If x_n is replaced by x, then new mean is

8.

While computing mean of grouped data, we assume that the frequencies are [NCERT Exemplar Problems]

9.

Mean of 100 items is 4 It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is

10.

The times, in seconds, taken by 150 atheletes to run a 100 m hurdle race are tabulated below:

Class Frequency

13.8-14 3

14 – 14.2 4

14.2 – 14.4 6

14.4 – 14.6 69

14.6 – 14.8 48

14.8 – 15.0 20

The number of atheletes who completed the race in less than 14.6 seconds is