TRB Tripura PGT Statistics Teacher Paper 2017

STPGT Statistics 2017

With the help of ogive curve, one can determine
(a) median
(b) deciles
(c) percentiles
(d) All of the above

Mean is a measure of
(a) location
(b) dispersion
(c) correlation
(d) None of the above

Extreme values have no effect on
(a) arithmetic mean
(b) median
(c) geometric mean
(d) harmonic mean

The geometric mean of two numbers 5 and -5 is
(a) 10
(b) 0
(c) 5
(d) None of the above

The AM of first 100 natural numbers is
(a) 51
(b) 50
(c) 50.5
(d) None of the above

If AM = 10 and CV = 40, then the value of SD is
(a) 4
(b) 16
(c) 12
(d) None of the above

For a positive skewed distribution
(a) median > mode
(b) mode > mean
(c) mean > median
(d) mean > mode

If for a frequency distribution mean=mode=16, then the value of median is
(a) 0
(b) 16
(c) 32
(d) 8

If Q1 = 15 and Q3=25, then the coefficient of quartile deviation is
(a) 4
(b) 1/4
(c) 5/3
(d) 3/5

The correct relation between MD (about mean) and SD is
(a) MD > SD
(b) MD is less than or equal to SD
(c) MD is greater than or equal to SD
(d) None of the above

In the regression line y = a+bx, b is called the
(a) slope of the line
(b) intercept of the line
(c) Neither (a) nor (b)
(d) Both (a) & (b)

The significance of regression coefficient can be tested by
(a) t-test
(b) F-test
(c) Both (a) & (b)
(d) Neither (a) nor (b)

Given the two lines of regression as
3x – 4y + 8 = 0
4x – 3y = 1,
the means of x and y are
(a) 4 and 5
(b) 3 and 4
(c) 4/3 and 5/4
(d) None of the above

Correlation coefficient was invented in the year
(a) 1910
(b) 1890
(c) 1908
(d) None of the above

The range of multiple correlation coefficient is
(a) zero to one
(b) zero to infinity
(c) – 1 to 1
(d) – infinity to + infinity

Probability is expressed as
(a) ratio
(b) proportion
(c) percentage
(d) All of the above

The definition of statistical probability was originally defined by
(a) De moivre
(b) Laplace
(c) Von Mises
(d) Pascal