STA301 GRAND QUIZ SOLVED 100% VERIFIED BY ADMIN (MID TERM SYLLABUS)
Q1: A frequecy curve touches x-axis:
A) Some times
B) Yes (page36 Touches x-axis at start and end) (100% Sure)
C) No
D) None of these
Q2: A fair coin is tossed three times. What is the probability that at least one head appears?
A) 1/8
B) 7/8 (Confrim 87.5% = 7/8) (100% Sure)
C) 4/8
D) 6/8
Q3: When we have range of data is 28 and the number of classes is 6 then the class interval will be:
A) 2.96
B) 4.67 (page29 class interval= 28/6 = 4.67) (100% Sure)
C) 3
D) 4
Q4: Temperature, in Fahrenheit, is an example of a variable measured on the following scale:
A) Interval (page9) (100% Sure)
B) Nominal
C) Ordinal
D) Ratio
Q5: A value which has half of the observations above it and half the observatoni below it, is known as:
A) Mean
B) Median (page64) (100% Sure)
C) Mode
D) Standard Deviation
Q6: The measure used to calculate the variation present among the observations relative to their average is called:
A) Coefficient of Kurtosis
B) Absolute measures of dispersion
C) Quartile deviation
Q7: For digit 40, leaf will be:
A) 1
B) 2
C) 4
D) 0 (leaf is the second digit of value) (100% Sure)
Q8: In a linear regression, best fitted line is obtained through:
A) Method of moment
B) Method of least square (page124) (100% Sure)
C) Method of likelihood
D) Method of semi average
Q9: Component bar chart is used when data is divided into:
C) Parts (page26) (100% Sure)
B) Groups
C) Circles
D) None of these
Q10: For positively skewed distribution mid range is ______ To/than the mid quartile range.
A) Greater (page98) (100% Sure)
B) Less
C) Equal
D) None of these
Q11: For a particular data set the Pearson's coefficient of skewness is greater then zero. What will be the shape of distribution?
A) Negatively Skewed
B) Positively Skewed (page109) (100% Sure)
C) Symmetrical
D) None of the above
Q12: If we calcualte the probability of an event and it turns out to be -7, we know that:
A) the event is probably going to happen
B) the event is probably not going to happen
C) the probability of it not happeing is 3
D) we made a mistake (Probability always positve) (100% Sure)
Q13: Relationships among the averages:
A) HM >= GM >= AM
B) GM <= GH <= AM
C) HM <= GM <= AM (Confirm) (100% Sure)
D) None of the above
Q14: A bell shaped distribution is also knwon as:
A) Symmetrical (page107) (100% Sure)
B) Bimodal
C) Skewed
D) U Shaped
Q15: A relatively less frequently encountered frequency distribution is:
A) Frequency distribution
B) U-shaped distribution (page41) (100% Sure)
C) J-Shaped distribution
D) Reverse J-shaped distribution
Q16: IF the co-efficient of dispersion of data set "A" is 0.7 and for data set "B" is 0.5. It indicates that:
A) Spread of Data set "A" is greater than Data set "B" (page83) (100% Sure)
B) Spread of Data set "B" is greater than Data set "A"
C) Spread of Data set "A" is equal to Data set "B"
D) It is meaningless
Q17: Statistics are ______ expressed?
A) Descriptive
B) Ability
C) Qualitatively
D) Quantitatively (page7) (100% Sure)
Q18: Which average gives the more weightage to the smaller values?
A) Harmonic Mean (AM give weightage to larger, both HM and GM give weightage to smaller) (100% Sure)
B) Geometric Mean
C) Arithmetic Mean
D) None of the above
Q19: Which pair of measure cannot be calucualte when one of numbers in the series is zero?
A) G.M and A.M
B) H.M and A.M
C) G.M and H.M (Confirm) (100% Sure)
D) None of these
Q20: Range is an _____ measure of dispersion.
A) Absolute (page83) (100% Sure)
B) Relative
C) Both Absolute and Relative
D) None of the above
Q21: First moment about mean will be equal to:
A) 0 (page119) (100% Sure)
B) Mean
C) Median
D) Variance
Q22: Data used by an egency which is origionally collected by them is called:
A) Primary Data (Because that data is used by them) (100% Sure)
B) Ungroup data
C) Secondary data
D) Grouped data
Q23: The distribution will be symmetrical. IF
A) median = midquartilerange = midrange (page101) (100% Sure)
B) median < midquartilerange < midrange
C) median > midquartilerange > midrange
D) None of the above
Q24: 5C5 equals to:
Q25: Which of the following measures of dispersion are based on deviations form the mean?
A) Variance
B) Standard Deviation
C) Mean Deviation
D) All of these (Confirm) (100% Sure)
Q26: The number of ways in which four books can be arraged on a shelf are:
A) 4
B) 6
C) 12
D) 24 (4! = 24) (100% Sure)
Q27: Given the least square regression line Y^ = 2 + 0.3x:
A) the relationship between x and y is positive (100% Sure)
B) the relationship between x and y is negative
C) as x decrease, so does y
D) None of the above
Q28: How many percent correspond to D6 if you will interpret is?
A) 20%
B) 40%
C) 60% (Confirm) (100% Sure)
D) 80%
Q29: Pearson coefficient of skewness is defined as:
A) (Mean - Mode)/SD (page109) (100% Sure)
B) (Median - Mode)/SD
C) SD/(Mean - Mode)
D) SD/(Median - Mode)
Q30: What is the stem part of 345?
A) 5
B) 4
C) 45
D) 34 (Confirm) (100% Sure)
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