MCQ 21

    1.   When the frequencies run up to maximum at one end of the range having shape of the letter J or its reverse, the curve is said to be

     A.        Moderately skewed or J shaped distribution.

     B.        Extremely skewed or J shaped distribution.

     C.        Skewed or J shaped distribution.

     D.        J shaped distribution.

    2.     Frequencies tend to pile up at one end or the other end of distribution or curve.

A.         Skewed distribution.

B.          Piled up distribution.

C.          Simple distribution.

D.         Complex distribution.

   3.   Most of the distributions in economics or medical statistics belong to

A.         Extremely skewed distribution.

B.        Piled up distribution.

C.        Simple distribution.

D.       Complex distribution.

   4.       In frequency distribution or curves, where the maximum frequencies occur at both ends of the range and minimum towards the centre

A.                J shaped distribution.

B.                 Extremely skewed distribution.

C.                 U shaped distribution.

D.                Skewed distribution.

    5.        In the ordinary types of graph, the scales used are called

A.       Geometric scales.

B.        Natural scales and special scales

C.        Nominal scales.

D.       Natural scales or arithmetic scales.

   6.    The ordinary graph paper is also known as

A.      Line paper

B.        Simple paper.

C.        Geometric paper.

D.       Arithmetic paper.

    7.    A  paper is so constructed that equal intervals on the vertical axis represent the equal ratios or rates of change, while equal intervals on the horizontal axis represents equal differences or amount of change.

A.       Semi-geometric paper.

B.        Semi-arithmetic paper.

C.        Semi-logarithmic paper.

D.       Semi-logarithmic and geometric chart paper.

    8.   The essential feature of a chart is that one axis has logarithmic scale and the other has arithmetic scale.

A.       Semi-geometric progression chart.

B.        Semi-logarithmic chart.

C.        Semi-automatic chart.

D.       Semi-arithmetic and automatic chart.

    9.   Graph obtained by plotting the values on a semi-logarithmic paper or ratio paper and joining the successive points by means of straight line segments are called

A.             Semi-logarithmic graphs or ratio charts.

B.              Semi-logarithmic geometric or probability charts.

C.              Semi-logarithmic progression.

D.             Semi –logarithmic probability.

   10.   In ratio charts there is no zero line on the logarithmic scale as the logarithm of zero is

A.      Zero.

B.       Plus infinity.

C.       Minus infinity.

D.      -1.

    11.   When a geometric progression plotted on a semi-logarithmic paper, forms a

A.      Curve.

B.       Straight line.

C.       Parabola

D.      Hyperbola.

    12.   When a geometric progression plotted on a semi-logarithmic paper, forms a straight line. It is because the logarithms of a geometric progression form an/a

A.       Simple progression.

B.        Hyper geometric progression.

C.        Arithmetic progression.

D.       Binomial progression.    

    13.   The slope of logarithmic scale variable indicates the

A.        Trend of distribution.

B.         Pattern of distribution.

C.         Skewness of distribution.

D.        Rate at which variable is changing.

    14.    In ratio chart, in case of two or more curves, the curve having the steepest slope, has the

A.        Largest rate of change.

B.         Smallest rate of change.

C.         Average rate of change.

D.        Largest value

    15.   In ratio chart equal slopes (in case of parallel curves) indicates equal

A.        Values.

B.         Angles.

C.         Rates of change.

D.       Starting points.

    16.   Geometrically “mean” represents a point at which the distribution or the set of observations

A.       Vanishes.

B.        Cancel out.

C.        Would balance.

D.       Would not balance.

    17.   The multiplier or a set of numbers which express   more or less adequately the relative importance of various observation in a set of data are technically called

A.        Constants.

B.         Weights.

C.         Values.

D.        Volumes.

    18.   Change of origin and scale is used to reduce the

A.        Computational labour.

B.         Length.

C.         To save time.

D.         A & C.

    19.   If we add or subtract any constant in the values, the process is called

A.       Change of origin.

B.        Change of scale.

C.        Calculation.

D.        Addition and subtraction.

     20.    If we divide or multiply by any constant, the process is called

A.      Change of origin.

B.        Chang e of scale.

C.        Calculation.

D.       Division and multiplication.

      21.    “The nth root of the product of n items of a series none of them being negative or zero”.

A.       Harmonic mean.

B.        Arithmetic mean.

C.        Geometric mean.

D.       Median.

      22.     A.M≥ G.M ≥H.M.

A.       For negatively skewed distribution.

B.        For any distribution.

C.        For positively skewed distribution.

D.       Not possible.

    23.    The G.M is appropriate to average ratios and rates of change.

A.       True.

B.        False.

C.        Sometimes true.

D.       Sometimes false.

     24.   “The reciprocal of the arithmetic mean of the reciprocals”.

A.       Geometric mean.

B.        Harmonic mean.

C.        Reciprocal mean.

D.       Calculated mean. 

     25.   The H.M is not an appropriate type to be used in averaging certain kind of ratios and rates of change.

A.       True.

B.        False.

C.        Sometimes true.

D.       Sometimes false

1	B	2	A	3	A	4	C	5	D
6	D	7	C	8	B	9	A	10	C
11	B	12	C	13	D	14	A	15	C
16	C	17	B	18	D	19	A	20	B
21	C	22	B	23	A	24	B	25	B