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formula of mode-economics 11th

what are the advantages of diagrammatic presentation of data.(state 3 important points)

Q. Marks secured by 42 students in Economics are:

Q. Average age of the people of a country is shown in the following table:

Q. Calculate the arithmetic mean of the following frequency distribution by Direct Method:

difference between individual series and discrete series???????????pls tell me fast???

how to find median in unequal class interval

If the arithmetic mean of the data given below is 28, find (a) the missing frequency, and (b) the median of the series:

Profit per retail shop (in Rs)0 – 10

10 – 20

20 – 30

30 – 40

40 – 50

50 – 60

Number of retail shops12

18

27

–

17

6

what is statistical average ?And give any four objectives of statistical average .

sandeep garg satistics problem solution 11th

The most suitable average for qualitative measurement is

(a) arithmetic mean

(b) median

(c) mode

(d) geometric mean

(e) none of the above

Which average is affected most by the presence of extreme items?

(a) median

(b) mode

(c) arithmetic mean

(d) none of the above

Q.1 Calculate arithmetic mean of the following data :

profit (in rs) : 0-10 10-2020-30 30-40 40-50 50-60

no of shops : 1218 27 20 17 16

Q.2. A candidate obtains 46% marks in english , 67% in mathematics , 50% in hindi 72% in history and 58% in economics . it is agreed to give triple weight to marks in english and double weight to marks in mathematics as compared to other subjects . calculate weighted mean . Also compare it with simple arithmetic mean .

Q.3. Calculate combined mean :

section mean marks no. of students

A 75 50

B 60 60

C 55 50

why is the arithmetic mean the most commonly used of central tendency?

WHAT IS STATISTICAL AVERAGE?WHAT DESIRABLE PROPERTIES SHOULD AN AVERAGE POSSESS?

Which average would be suitable in the following cases?

(i) Average size of readymade garments.

(ii) Average intelligence of students in a class.

(iii) Average production in a factory per shift.

(iv) Average wage in an industrial concern.

(v) When the sum of absolute deviations from average is least.

(vi) When quantities of the variable are in ratios.

(vii) In case of open-ended frequency distribution.

how to find out the common factor for the formula of finding mean by step deviation method

find the quartile deviation and its coefficients from the following data

x 10 20 3040 50 60 70 80 90 100

f 2 820 35 42 20 28 26 16 2

what is the difference between individual and discreet series???

pls ans ...fast it is urgent..

average income of 50 families is 3000. Of these average income of 12 families is 1800. Find out the average income of the remaining families

The Average marks in statistics of 10 students were 68. A new student with 72 marks where as 2 existing students left the college. If the marks of these students were 40 39, find the Average marks?

what is mean by mean,median and mode

THE ARITHMETIC MEAN IS DESCRIBED AS THE CENTRE OF GRAVITY OF THE DISTRIBUTION OF VALUES OF THE VARIABLE.EXPLAIN

what are sampling errors and non sampling errors?explain with siutable examples.(6 marks)

show the relationship between mean ,median ,mode ?

a housewife uses 10g of wheat, 20 kg of fuel, 5kg of sugar and 2 kg of oil. prices of these items are respectively rs. 1.50 ,50 paise , rs. 2.80 and rs. 10. taking quantites used as weights find out the weighted arithmetic average of these prices.

weight of eight students in Kg is noted as,

71, 72, 64, 68, 70, 76, 73, 75

find median weight

answer is 71.5 kg but my calculations are not matching. please help and explain

What is the formula for correct mean and correct frequency distribution?

if the arithmetic mean of the data given below is 28 ,find out the missing frequency

x

0-9

10-19

20-29

30-39

40-49

50-59

f

12

18

27

?

17

6

(Ans: X = 13)mean marks obtanied by a student in his five subject are 15. in eng. he secures 8 marks, in eco. 12, in maths 18, and in commerce 9. find out the marks he secured in statistics.

In Calculation of Quartiles in Individual Series..what would be Q1 and Q3 of-X-12, 16, 17, 19, 21, 28, 30, 32

what are the essentials of a good average?mention any three(3 marks)

Q7. Calculate arithmetic mean from the following data using step deviation method:-

Q9. Given the following data on monthly wages of 1000 workers, frequency of two class interval are missing Locate these if Median of the series is 56.

Q. Calculate mean: median:and mode

x f

10-20 4

10-30 16

10-40 56

10-50 97

10-60 124

10-70 137

10-80 146

10-90 150

guys please.............. its urgent experts please......reply fast .....

10-40

10. Calculate mode in the following distribution using grouping method:-

0-4 2 4-8 4 8-12 7 12 - 16 5 16-20 8 20 -24 3 24 - 28 2 28 -32 1 32 - 36 13 36 - 40 5 40 -44 3 44 - 48 3 find the median . also use ogives

how to calculate a in assume mean method formula

Marks

4 5 6 7 8

Number of Students

12 10 18 20 24

Calculate arithmetic mean using Direct

Name two positional averages.

what is quartile?

Following information pertains to the daily income of 150 families. Calculate the arithmetic mean.

Income (in Rs)Number of familiesMore than 75

150

More than 85

140

More than 95

115

More than 105

95

More than 115

70

More than 125

60

More than 135

40

More than 145

25

what is GATT?state any two functions WTO?

The following table gives production yield in kg. per hectare of wheat of 150 farms in a village. Calculate the mean, median and mode values.

Production yield (kg. per hectare)50 – 53

53 – 56

56 – 59

59 – 62

62 – 65

65 – 68

68 – 71

71 – 74

74 – 77

Number of farms

3

8

14

30

36

28

16

10

5

arithmetic mean is affected by very large and very small values , but median mode are not affected by them. explain

Calculate quartile deviation from the data given below.

X

20-30

30-40

40-50

50-60

60-70

F

4

6

8

6

4

The algebraic sum of deviation of a set of n values from A.M. is

(a) n

(b) 0

(c) 1

(d) none of the above

The median of a series is 10.Two additional observations ,7 & 20 are added to series . What will be median of new series?

if mode is 63 and median is 77 calculate arithmetic mean.

Name 3 measures Of central tendency?

where r the textbook solution of stats of n.m.shah

The mean annual salary paid to all employees of a company was Rs. 500.Mean annual salaries paid to male and female employees were Rs.520 and Sr.420.Determine the percentage of males and females employed?

i want statistics chapter-10 answers book writer-T.R. jain

STATE THE FOUR OBJECTIVES OF STATISTICAL AVERAGE.