**The mean and mode values are 42.2 and 41.3 then the median value is ____.**

a. 42.

b. 41.

c. 41.9.

d. 42.9.

Answer: C

**For any two positive numbers, geometric mean=_______.**

a. Arithmeticmean harmonicmean .

b. Arithmeticmean harmonicmean .

c. Arithmeticmean * harmonicmean .

d. Arithmeticmean / harmonicmean .

Answer: C

**If A= 1 -2 3 then -3A=___________.**

A. 045 a. 3 -6 9 0 1215 15

b. -3 6 9 0 -12 -15

c.-3 6 -9 0 -12-1

d.-3 6 9 0 -12 -15

Answer: C

**Transpose of AT is _________.**

a. A3T.

b. A2T.

c. A.

d. AT.

Answer: C

**Determinant (AB) = __________.**

a. det(A+B).

b. det A + det B.

c. det A. det B.

d. det (A/B).

Answer: C

**Every polynomial equation of the nth degree has ________ roots.**

a. n.

b. n+1.

c. n-1.

d. n+2.

Answer: A

**A polynomial of the form y=a+bx is called __________.**

a. straight line.

b. second degree equation.

c. polynomial equation.

d. reciprocal equation.

Answer: A

**Gauss Jacobi method is a _________.**

a. direct.

b. indirect.

c. self correcting.

d. step by step.

Answer: B

**Matrix A is of order 2*3 and B is of order 3*2 then AB is of order____.**

a. 3*2.

b. 2*3.

c. 2*2.

d. 3*3.

Answer: C

**For studying phenomena like intelligence and density _____ is a better average to be**

**used.**

a. mean.

b. median.

c. harmonic mean.

d. geometric mean.

Answer: B

**The _____ is useful when data are given in terms of rates.**

a. arithmetic mean.

b. median.

c. harmonic mean.

d. geometric mean.

Answer: C

**In discrete frequency distribution the total number of observations N=___.**

a. fx. b. f .

c . 1f .

d. f log x .

Answer: B

**When the relationship is of a quantitative nature the appropriate statistical tool for**

**discovering and measuring the relationship and expressing the brief formula is** **known as____.**

a. correlation.

b. rank correlation.

c. regression.

d. both correlation and regression.

Answer: A

**The ______correlation was developed by spearmen. **

a. partial.

b. multiple.

c. rank.

d. positive.

Answer: C

**The ranks according to two attributes in a sample are 1,2,3,4,5 and 5,4,3,2,1. The**

**rank correlation between them is _____.**

a. 0.

b. -1.

c. 1.

d. 2.

Answer: B

**While drawing a scatter diagram if all points appear to from a straight line going**

**downward form left to right then it is inferred that there is ____.**

a. perfect positive correlation.

b. simple positive correlation.

c. perfect negative correlation.

d. no correlation.

Answer: D

**______correlation implies real relationship between the variables.**

a. Partial.

b. Multiple.

c. Rank.

d. Spurious.

Answer: D

**What is the value of factorial Zero (0!)**

a. 10.

b. 0 .

c. 1 .

d. -1.

Answer: C

**Let Y=aX+b be the straight line equation then the normal equations are______ and __________.**

a.YaXnbandXYaX2 bX.

b.YaXnbandXYaX2 bX.

c. Y aX nb and XY aX2 bX .

d.YaXXY andXYaX2 bX.

Answer: A

**The degree and order of the differential equation of the family of all parabolas, whose axis is x-axis, are respectively ____________**.

a. 2, 1.

b. 1, 2.

c. 3, 2.

d. 2, 3.

Answer: B

**If h=2, find the value of y when x=5 by Newton Forward Interpolation Formula X: 4 6 Y: 1 3**

a. 2.

b. 3.

c. 0.

d. 4.

Answer: A

**In Runge-Kutta Method of second order the value of Δy=_____.**

a. K1.

b. K2.

c. K1+K2.

d. K1-K2.

Answer: B

**Statistical information is expressed in ___________.**

a. descriptive form.

b. numerical form.

c. both descriptive and numerical form.

d. neither descriptive nor numerical form.

Answer: B

**Which average is affected most by extreme observations _______.**

a. mean.

b. median.

c. mode.

d.G.M.

Answer: A

**If a frequency distribution is positively skewed, the mean of the distribution is**

**________.**

a. greater than the mode.

b. less than the mode.

c. equal to mode.

d. less than the mean.

Answer: A

**The trend can be found by the method of least squares ____________.**

a. if the nature of trend is known.

b. if the trend is not linear.

c. if the trend is linear.

d. if the nature of the trend is unknown.

Answer: C

**The point of intersection of the two Ogives is __________.**

a. mean.

b. median.

c. mode.

d. G.M.

Answer: B

**A measure of ______ gives a single representative value for a set of usually unequal values.**

a. dispersion.

b. central tendency.

c. variation.

d. relation.

Answer: B

**In a symmetrical distribution mean, median and mode are __________.**

a. equal.

b. unequal.

c. zero.

d. one.

Answer: A

**All the points lie on a line in a scatter** **diagram when r = _____.**

a. +1.

b. -1.

c. 1.

d. 0.

Answer: C

**The line obtained by the method of least squares is known as the line of _________.**

a. best fit.

b. correlation.

c. regression.

d. none.

Answer: A

**Rank correlation method was developed by __________.**

a. Karl Pearson.

b. R.A. Fisher.

c. Spearman.

d. Croxten and cowden.

Answer: C

**________ is the geometric mean of two regression coefficient .**

a. mean.

b. correlation.

c. rank correlation.

d. mode.

Answer: B

**Regression coefficients are affected by change of ________.**

a. origin.

b. scale.

c. both origin and scale.

d. neither origin nor scale.

Answer: B

**Median usually lies between ________.**

a. mean and mode.

b. mean and G.M.

c. mean and H.M.

d. G.M and H.M.

Answer: A

**The word statistics is used as __________.**

a. a singular word.

b. a plural word.

c. both singular and plural words.

d. neither singular nor plural word.

Answer: C

**Statistics is __________.**

a. a quantitative science.

b. a qualitative science.

c. both quantitative and qualitative science.

d. neither quantitative nor qualitative science.

Answer: A

**Statistics considers _________.**

a. a single item.

b. a set of items.

c. either a single item or a set of items.

d. neither a single item nor a set of items.

Answer: B

**Statistics can ______________.**

a. prove anything.

b. disprove anything.

c. neither prove nor disprove anything but it is just a tool.

d. none of these.

Answer: C

**Statistics can be considered as ___________.**

a. an art.

b. a science.

c. both an art and a science.

d. neither an art nor a science.

Answer: C

**Calculate Arithmetic mean of the daily incomes of 10 families Rs. 10,90,85,103,11,29,84,15,35,80.**

a. 54.2.

b. 52.4.

c. 50.2.

d. 50.4.

Answer: A

**The arithmetic mean of the values 45,48,50,52,55,58,60,01,63,65 is ____________.**

a. 55.

b. 55.7.

c. 56.

d. 56.7.

Answer: B

**The arithmetic mean of the values 4,8,10,5,2,6 is ______________.**

a. 5.

b. 6.3.

c. 5.8.

d. 7.

Answer: C

**Find the median for the values 4,45,60,20,83,19,26,11,27,12,52.**

a. 26.

b. 19.

c. 83.

d. 20.

Answer: A

**Calculate median 35,23,45,50,80,61,92,40,52,61.**

a. 50.

b. 51.

c. 61.

d. 60.

Answer: B

**Find mode 23,35,28,42,62,53,35,28,42,35,23,42,35.**

a. 23.

b. 28.

c. 42.

d. 35.

Answer: D