Sandeep Garg (2019) - GeniusJnr

Sandeep Garg (2019) : MCQ, free quiz, mock quiz, practise questions, olympiad preparation

Sandeep Garg (2019)

Chapters

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Organisation of Data

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Tabular Presentation

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Diagrammatic Presentation

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Graphic Presentation

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Measures of Central Tendency- Arithmetic Mean

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Measures of Central Tendency- Median and Mode

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Questions

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Following are the figures of marks obtained by 40 students. You ae required to arrange them in ascending and in descending order.

15	18	16	14	10	6	5	3	8	7
22	18	14	19	17	8	6	4	10	3
12	16	15	13	11	10	18	22	14	19
11	18	22	14	25	21	17	8	9	10

solve

Heights (in inches) of 35 students of a class in given below. Classify the following data in a discrete frequency series

58	60	72	68	58	55	58	72	55	68	66	60
60	55	76	66	58	72	68	60	55	68	55	58
62	66	72	58	60	68	55	58	65	72	68

solve

The following are the marks of the 30 students in statistics. prepare a frequency distribution taking the class−intervals as 10−20, 20−30 and so on.

12	33	23	25	18	35	37	49	54	51	37	15	33	42	45
47	55	69	65	63	46	29	18	37	46	59	29	35	45	27

solve

Following are the marks (out of 100) obtained by 50 students in statistics:

70	55	51	42	57	45	60	47	63	53
33	65	39	82	55	64	58	61	65	42
50	52	53	45	45	25	36	59	63	39
65	54	49	54	64	75	42	41	52	35
30	35	15	48	26	20	40	55	46	18

make a frequency distribution taking the first class interval as 0-10.

solve

Prepare a frequency table taking class intervals 20−24, 25−29, 30−34 and so on, from the following data:

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38

solve

From the following data, calculate the lower limit of the first class and upper limit of the last class.

Daily Wages	Less than 120	120−140	140−160	160−180	Above 180
No. of Workers	35	12	10	40	13

solve

Calculate the missing class-intervals from the following distribution:

Class-Interval	Below 20	20−50	50−90	90−140	More than 140
Frequency	7	12	16	2	4

solve

Convert the following 'more than' cumulative frequency distribution into a 'less than' cumulative frequency distribution

Class-Interval (More than)	10	20	30	40	50	60	70	80
Frequency	124	119	107	84	55	31	12	2

solve

Convert the following cumulative frequency series into simple frequency series

Marks	No. of Students
Less than 20	10
Less than 40	18
Less than 60	25
Less than 80	45
Less than 100	55

solve

Prepare a frequency distribution from the following data:

Mid-Points	25	35	45	55	65	75
Frequency	6	10	9	12	8	5

solve

The ages of 20 husbands and wives are given below. Form a two-way frequency table showing the relationship between the ages of husbands and wives with the class-intervals 20−25, 25−30, etc.

S.No	Age of Husband	Age of Wife	S. No.	Age of Husband	Age of Wife
1	28	23	11	27	24
2	37	30	12	39	34
3	42	40	13	23	20
4	25	26	14	33	31
5	29	25	15	36	29
6	47	31	16	32	35
7	37	35	17	22	23
8	35	25	18	29	27
9	23	21	19	38	34
10	41	38	20	48	47

solve

The following data give the points scored in a tennis match by two player X and Y at the end of twenty games:

(10,12)	(2,11)	(7,9)	(15,19)	(17,21)	(12,8)	(16,10)	(14,14)	(22,18)	(16,4)
(15,16)	(22,20)	(19,15)	(7,18)	(11,11)	(12,18)	(10,10)	(5,13)	(11,7)	(10,10)

Taking class intervals as: 5−9, 10−14, 15−19..., for both X and Y, construct a Bivariate Frequency Distribution.

solve

15	18	16	14	10	6	5	3	8	7
22	18	14	19	17	8	6	4	10	3
12	16	15	13	11	10	18	22	14	19
11	18	22	14	25	21	17	8	9	10

58	60	72	68	58	55	58	72	55	68	66	60
60	55	76	66	58	72	68	60	55	68	55	58
62	66	72	58	60	68	55	58	65	72	68

12	33	23	25	18	35	37	49	54	51	37	15	33	42	45
47	55	69	65	63	46	29	18	37	46	59	29	35	45	27

70	55	51	42	57	45	60	47	63	53
33	65	39	82	55	64	58	61	65	42
50	52	53	45	45	25	36	59	63	39
65	54	49	54	64	75	42	41	52	35
30	35	15	48	26	20	40	55	46	18

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38

15	18	16	14	10	6	5	3	8	7
22	18	14	19	17	8	6	4	10	3
12	16	15	13	11	10	18	22	14	19
11	18	22	14	25	21	17	8	9	10

58	60	72	68	58	55	58	72	55	68	66	60
60	55	76	66	58	72	68	60	55	68	55	58
62	66	72	58	60	68	55	58	65	72	68

12	33	23	25	18	35	37	49	54	51	37	15	33	42	45
47	55	69	65	63	46	29	18	37	46	59	29	35	45	27

70	55	51	42	57	45	60	47	63	53
33	65	39	82	55	64	58	61	65	42
50	52	53	45	45	25	36	59	63	39
65	54	49	54	64	75	42	41	52	35
30	35	15	48	26	20	40	55	46	18

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38

15	18	16	14	10	6	5	3	8	7
22	18	14	19	17	8	6	4	10	3
12	16	15	13	11	10	18	22	14	19
11	18	22	14	25	21	17	8	9	10

58	60	72	68	58	55	58	72	55	68	66	60
60	55	76	66	58	72	68	60	55	68	55	58
62	66	72	58	60	68	55	58	65	72	68

12	33	23	25	18	35	37	49	54	51	37	15	33	42	45
47	55	69	65	63	46	29	18	37	46	59	29	35	45	27

70	55	51	42	57	45	60	47	63	53
33	65	39	82	55	64	58	61	65	42
50	52	53	45	45	25	36	59	63	39
65	54	49	54	64	75	42	41	52	35
30	35	15	48	26	20	40	55	46	18

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38