11th class statistics,100% Guess complete book important short questions,1st year class 100% guess,part 1, provided by welcome academy

Most important short questions of 11th class statistics,ics inter class part1 statistics important short questions

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title:11th class statistics,100% Guess complete book important short questions,1st year class 100% guess,part 1, provided by welcome academy 

 

 What is statistics?
Name the different types of statistics ?    
iii) What is descriptive statistics?
iv) What is inferential statistics?    
v) Write ant three charactristics of statistics?
vi) What is the importance of statistics in business?    
vii) Write any three characteristics of statistics?
viii) Name any three method of primary data collection ?    
ix) What are secondary data?
x) Differentiate between primary data and seocondary data?    

xi) Name any three sources of secondary data?
xii) Name ant three methods of secondary data?    
xiii) What is discrete variable ?
xiv) What is continuous variable ?    
xv) what is qualitative variables?
xvi) What is quantitative variables?   
 xvii) What is constant ?
xviii) What is population ?    
xix) what is sample ?
xx) Define statistic ? 

  
xxi) Define parameter ?
xxii) What are ungrouped data ?    
xxiii) What are grouped data?
xxiv) Write different methods of presentation of data?    
xxv) What is classification ?
xxvi) Define array?    
xxvii) What is frequency ?
xxviii) What is class?    
xxix) What is class frequency ?
xxx) What is commutative frequency?    
xxxi) What is relative frequency?
xxxii) what is class limit?    
xxxiii) What is the upper limit of class 45-50?
xxxiv) What are class boundries?    
xxxv) What is class interval?
xxxvi) What is lower class boundries?    
xxxvii) What is mid point of class 16-12?
xxxviii) What is open end class?    
xxxix) Write any types of charts /diagrams?
xl) Name any three graphs of frequency?   
 xli) Define graph?
xlii) Define chart?   
 xliii) What is histogram?
xliv) Define historigram?    
xlv) Differentiate between histogram and historigram?
xlvi) What is Pictograph?    
xlvii) Define Cartogram ?
xlviii) Define pie diagram?    
xlix) Name any three graphs of frequency distribution?
l) Define frequency curves?    
li) what is an ogive?
liii) What is an average? Why is it called a measure of
lii) Give any three characteristics of good statistical table?
liv) Give an important advantage and disadvantage of
central tendency and a measure of location?
the mean.    
lv) What is coding?
lvi) Define the weighted mean.    
lvii) Compute the median for the data -2, 5, 0, -1, 4, 2.
lviii) Give a common advantage and a common disadvantage of the median and the mode.
lx) Describe the empirical relation between the mean, median, mode.
lxii) Describe the compound interest formula and its role
lix) The mean is affected by change of origin and scale. Explain.
lxi) What is the relative position of the mean, median and mode in the symmetrical and moderately skewed distribution?
to find the average rate of increase.   
lxiii) What is an average of position?
lxiv) Find six different statistical terms of the balance point or the central value of a symmetrical frequency curve.
lxvi) Find two numbers whose arithmetic mean is 9.0 and whose geometric mean is 7.2.
lxviii) The mean of a series of 15 number is 20, By adding two or more numbers it becomes 18. Find the

lxv) Suppose Q1=67, Q2=median=75, Q3=83. Interpret the significance of each.
lxvii) The geometric mean of a series of three positive numbers is 4. By including the fourth number in the series the geometric mean becomes 2. What is the fourth number?

two number of the ratio between them is 1 to 2.    
lxix) Calculate G.M for 0,2,4,6 and 10.
lxxi) The A.M, G.M and H.M of a distribution of a continuous variable were calculated as 23.95, 24.85

lxx) Find mode from the given data 4,4,5,5,6,5,6,7,7
lxxii) The mean of 10 numbers is 8. If an eleventh number is included the mean becomes 9. What is the value of the eleventh number?
lxxiv) The sum of deviations of 15 values from 20 is
and 25.15. Identify the A.M,G.Mand H.M.
lxxiii) If mode=25 and median =30, then find approximate value of mean.
45.Find A.M    lxxv) Define Median with formula.
lxxvii) The mean of 'n' value is 8. If a new value is included the
lxxvi) Write down the properties of Arithmetic Mean.    mean becomes 9 .find the value of n?
lxxviii) Find the mod and median of letter STATISTICS?    
lxxix) What are the other names of average?

lxxx) In a skewed distribution if mode=15 and mean=10.5 find median?
lxxxi) What happen to the mean ,median ,G.M and H.M.If 10% is subtracted from each value of given data.

lxxxii) Define geometric mean?    
lxxxiii) Write demerits of mode?
lxxxiv) What are merits and demerits of median?    
lxxxv) Define quartile?
lxxxvii) In a part, each child was asked to state the number of children in his or her family. Two children said one child, four children said two and twelve children said three.
(i) How many families were at the party?
(ii) Find the mean number of children per
lxxxvi) If G.M of 3 items is 7 .find the Products of all items.
lxxxviii) If mean =20 , Median =18.67 .Find Mode.
xc) calculate median from the given data:
family.
lxxxix) Given that median =15 and mode=20 by using the empirical relationship find the value of the mean.
88,03, 94,50,94,90,95,05, 84,40    
xci) Average of 5 values is 70 .find the sum of values.
xcii) A distribution consist of 3 components with respective size 45,40 and 65 alongwith their means 2, 2.5 and 2 .Compute thecombined mean.   
xciii) Find the mode of 3,3,7,8,11,10,12
xciv) Mean =75, mode =70 ,find the median?    
xcv) Give the Bowleys's formula of coefficient of skewness? 

xcvi) For what value S.D and variance are equal?    
xcvii) State the properties of mean deviation?
xcviii) For a symmetrical distribution S.D=2 .What is the value ofm4=?    
xcix) Is it possible that first moment about mean is 10.
c) Differentiate between symmetry and skewness.    
ci) Define the term Despersion?
cii) What does quartile deviation measure in a distribution? 

  

ciii) The range is generally a poor measure of dispersion .Explain.
cv) Define a measure of relative dispersion that could be used for a

civ) Define the range for grouped data?
cvi) By adding 5 to each of number in the set 3,6,2,1,5,7 we obtained the set 8,11,7,6,10,12. Show that the two sets have the
set of data for which quartile are known?

same standard deviation but different means.    
cvii) Define absolute dispersion?
cviii) What is a relative
cix) Write four relative measures of dispersion?
cx) Define the coefficient of variation ?    
cxi) What is the usefulness of coefficient of variation?
cxii) If the first moment about the number 2 is equal to 5. What isthe man?   
 cxiii) Name the distribution if
1 =0 and 2=2
cxiv) A series comprises of 50 values each equal to 5 What will be the average and dispersion of the series.
cxv) What would be the shape and name of the frequency distribution if
(i)mean=median=mode
(ii)mean>median>mode
(iii)mean<median<mode
cxvi) Define moment ratio.In which units are they expressed ? 

cxvii) What is variance?
cxviii) By multiplying each of the number 3,4,2,1,5 by 2 and then adding 5,we obtain 11,13,9,7,15. What is the relationship between the mean and the standard deviation of the two sets?
cxix) Measure of skewness and measures of kurtosis both measure the shape of the distribution.What is the difference between these two types of measures?
cxx) Give names of any four methods for calculating dispersion?    cxxi) Define Dispersion,mean deviation and Standard deviation. cxxii) What is positive skewness ?   
cxxiii) Define average deviation?
cxxv) Find Bowley's coefficient of skewness given Q1=53.67,
cxxiv) What is standard deviation?
cxxvi) If Q1=136.62, Q2=146 and Q3=153.13 Find Bowley's
Median=65, Q3=76.33. Also comment upon the result .

coefficient of skewness.    
cxxvii) If Var(X)=16,then find variance of 3x and 3x-10
cxxviii) Given Mean=50, Median=48 and S.D=6.find Karl Pearson's
coefficient of skewness.    
cxxix) Compute the rang of -1,-3,0,2,5,8,Xm=8, Xo=-3
cxxx) If coefficient of skewness is zero.SK=0, then what will you say
about Mean,Median and Mode?    
cxxxi) If S.D=3 of set of data then what will be the variance. cxxxii) A student calculate mean and standard deviation of 25
observation as 20 and 4 respectively.Find the value of coefficient of
variation.    
cxxxiii) What is meant by skewness and how it is calculated ? cxxxv) For a certain distribution mean=40, median=41 and
cxxxiv) When the distribution is leptokurtic and platykurtic.    coefficient of skewness=-0.25. find the value of S.D
cxxxvi) Define kurtosis.    
cxxxvii) Write the types of dispersion.
cxxxviii) Define the semi-interquartile range or the quartile deviation.

 cxxxix) Write any two properties of S.D
cxli) The standard deviation of a symmetrical distribution is 5 Find
cxl) Name the distribution if =0,    =2


cxlii) Given  =10 and Var(X)=4 Find    and Var( )when
(i) Y=2-1    (ii) Y=1/3(4+3X)
cxliv) A manufacturer of T.V tubes has two types of tubes A and B its first fout moments about the mean.
cxliii) A child is born to Mrs. X everyone year for 7 consecutive years.Compute the standard deviation of the children's age when
(i) the youngest is one year old
(ii) the youngest is 8 year old .Why do the answer of (i) and (ii) coincide?
cxliv) A manufacturer of T.V tubes has two types of tubes A and B.The tubes have respective mean lifetimes
A=1495 hours and B =1895 hours and standard deviation SA=280 hours and SB=310 hours .Which tube has the greater (i) absolute dispersion (ii) Relative dispersion ?
cxlvi) The mean standard deviation (s.d) and the coefficient of skewness of a distribution are 29.6,6.5 and 0.32 respectively .Find
(i) Mode
(ii) Median of this distribution.
cxlviii) Why standard deviation is preferred over mean deviation?
cl) Pearson's first and second coefficient of skewness have (Mean- Mode) and 3 (Mean-Mode) in the numerator of each formula respectively. What type of relationship is used to obtain one from
cxlv) What is the relation between (i) the first moment about zero and the mean (ii) the first moment about the value A and the mean
(iii) the second moment about the mean and the variance ?
cxlvii) The first three moments of a distribution about the value 4 are 1,4 and 10. Is the distribution symmetrical positively skewed or negatively skewed? Also find the coefficient of variation.
cxlix) By multiplying each of the number 3,4,2,1,5 by 2 then adding 5 we obtain 11,13,9,7,15.What is the relationship between the means and the standard deviations of the two sets ?

the other?    
cli) Define Dispersion ,mean deviation and Standard deviation.
clii) If mean =25, c.v =64% What will be the variance?    
cliii) If Var(X) =5 and Var(Y)=1/3 then find Var(2X-3Y) ?
cliv) Define an index number ?    
clv) Define simple and composite index number.
clvi) Which methods are used for the construction of consumer price

clvii) Enlist the main steps involved in the construction of index number ?
clviii) What are the different types of index numbers?
number.
clix) Differentiate between Fixed Base method and Chain Base Method.

clx) Define simple price relative .    
clxi) Define link relative?
clxii) Differentiate between general purpose index number and special purpose index number?
clxiii) Which index number satisfy the time reversal or factor reversal test or both?

clxiv) Define a wholesale price index?    
clxv) What is consumer index number ?
clxvi) Describe the unweighted index numbers .    
clxvii) What are weighted index numbers.
clxviii) What are the disadvantages of of the Laspeyree' index?    
clxix) What are the disadvantages of the Paasche's index?

 clxx) What is the difference between average of relatives method
and aggregate method?    
clxxi) Name the source of index numbers.
clxxii) What is the main disadvantage of the unweighted index number.    
clxxiii) Why index numbers are called economic barometer?
clxxiv) Write any two uses of index number?    
clxxv) Write the formula for Fisher's index number?
clxxvi) What is CPI?    
clxxvii) Write any two limitations of index numbers.
clxxix) Differentiate between base year,weighted and current
clxxviii) Write any two advantages of chain base method.    year,weighted index numbers.

 clxxx) How do we select commodities for index numbers?    

clxxxi) What are quantity index numbers?

clxxxii) If fisher's ideal index=117.84 and Laspeyre's index=117.9 then what will be the Paasche's index ?
clxxxiv) Which average are used in index numbers?
clxxxvi) What is the answer of 6C4 and 6P4
clxxxiii) If Laspeyres index number=105.4 and Paasches index number=103.2 then find the fisher's index number.
clxxxv) Po=2550 and Pn=2590. Find price index number by
using simple aggregative method.
clxxxvii) A bag has five coins each in different denomination.How many different sums of denomianation can be formed?
clxxxviii) In how many ways can 6 persons be seated on a sofa with 

clxxxix) A person has three suits ,five shirts and six ties,In how
three seats.    ways can he wear a suit, a shirt and a tie?
cxc) Define factorial with example
cxci) Write down all the subsets of the set A={x,y,z}
cxcii) Give an example of the product set?    

cxciii) Define the product set and illustrate with an example? 

cxciv) Write down the different set of operations?    
cxcv) What is a fundamental principle of counting ?
cxcvii) What is the number of permutation of n distinct objects taken.
cxcvi) Distinguish between permutation and combination?
cxcviii) In how many ways can a team of 11 players be chosen from n at a time?
a total of 16 player.    

 cxcix) Define a proper set ?
cc) Find the relationship between nCr and nPr

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