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formula of mode-economics 11th
The most suitable average for qualitative measurement is
(a) arithmetic mean
(d) geometric mean
(e) none of the above
what are the advantages of diagrammatic presentation of data.(state 3 important points)
difference between individual series and discrete series???????????pls tell me fast???
the mean of 10 items was 70.later on it was find that one item 92 was misread as 29 .what was correct mean?
Its urgent ! Please reply
how to find median in unequal class interval
what is statistical average ?And give any four objectives of statistical average .
Comment whether the following statements are true or false.
(i) The sum of deviation of items from median is zero.
(ii) An average alone is not enough to compare series.
(iii) Arithmetic mean is a positional value.
(iv) Upper quartile is the lowest value of top 25% of items.
(v) Median is unduly affected by extreme observations.
sandeep garg satistics problem solution 11th
WHAT IS STATISTICAL AVERAGE?WHAT DESIRABLE PROPERTIES SHOULD AN AVERAGE POSSESS?
Which average is affected most by the presence of extreme items?
(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
how to find out the common factor for the formula of finding mean by step deviation method
Calculate median from the following series:
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
The following data-set gives mid-values and frequencies. Calculate its mode.
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
what is the difference between individual and discreet series???
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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.
Q. Calculate mean: median:and mode
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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.
What is the formula for correct mean and correct frequency distribution?
how can we measure mean in case of open end series
if the arithmetic mean of the data given below is 28 ,find out the missing frequency
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.
what are the essentials of a good average?mention any three(3 marks)
In Calculation of Quartiles in Individual Series..what would be Q1 and Q3 of-
X-12, 16, 17, 19, 21, 28, 30, 32
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 shops
why is the arithmetic mean the most commonly used of central tendency?
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
what is quartile?
arithmetic mean is affected by very large and very small values , but median mode are not affected by them. explain
what is GATT?state any two functions WTO?
The algebraic sum of deviation of a set of n values from A.M. is
Calculate quartile deviation from the data given below.
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?
The median of a series is 10.Two additional observations ,7 & 20 are added to series . What will be median of new series?
The size of land holdings of 380 families in a village is given below. Find the median size of land holdings.
Size of Land Holdings (in acres)
Less than 100
100 – 200
200 – 300
300 – 400
400 and above
Number of families
if mode is 63 and median is 77 calculate arithmetic mean.
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?
Name 3 measures Of central tendency?
where r the textbook solution of stats of n.m.shah
Name two positional averages.
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