ABC26PH0962 · In a conductometric experiment for estimation of acid dissociation constant of acetic acid, the following values were obtained in four sets… · JUNE 2015
ABC26PH0963 · In a titration, the percentage uncertainties in the measured aliquot volume and the measured titre volume are x and y respectively. The… · JUNE 2016
ABC26PH0049 · Covariance is defined by the relation Cov(x,y)= xy- x y. Given the arbitrary constants A, B and C, Cov(x,y) will be zero if · DEC 2016
ABC26PH0964 · Covariance is defined by the relation Cov(x, y)=-. Given the arbitrary constants A, B and C, Cov(x, y) will be zero if · DEC 2016
ABC26PH0966 · A Gaussian distribution has the functional form f(x)=22 a2 pi e^-(x-b)2 / 2 a2. The variance of such distribution is · JUNE 2018
ABC26PH0967 · A physical observable, 'x', appears with the probability distribution e(-|2 x-12|) the average of x would be · JUNE 2019
Error Propagation
ABC26PH0953 · If y2=4 x and 0.1 \% error is incurred for x , the percentage error involved in y will be · JUNE 2015
ABC26PH0955 · The data obtained from two sets of experiments A and B have the following characteristics It may be concluded that · JUNE 2012
ABC26PH0960 · The masses recorded when a substance is weighed 4 times are 15.8, 15.4, 15.6 and 16.0 mg. The variance (square of the standard deviation)… · DEC 2013
ABC26PH0961 · For a set of 10 observed data points, the mean is 8 and the variance is 0.04 . The 'standard deviation' and the 'coefficient of variation'… · JUNE 2014
ABC26PH0050 · Repeated measurement of Pb in a lake water sample gave 3.2, 5.2 and 7.2\,ppb of Pb. Standard deviation in the measurement of Pb is · DEC 2017
ABC26PH0965 · Repeated measurement of Pb in a lake water sample gave 3.2,5.2 and 7.2 ppb of Pb . Standard deviation in the measurement of Pb is · DEC 2017
Regression Fitting
ABC26PH0954 · In least square fitting of a data set \Xi Yi \ to the equation Y= A.X, the regression coefficient (A) is estimated by · DEC 2011
ABC26PH0956 · Two data sets involving the same variables X and Y are given below If the slopes and intercepts of the regression lines for the two sets… · JUNE 2012
ABC26PH0957 · The correlation coefficient between two arbitrary variables x and y is zero, if · DEC 2012
ABC26PH0958 · The correlation coefficient of two parameters is found to be -0.99 . It may be concluded that the two parameters are · JUNE 2013
ABC26PH0959 · For two variables x and y , the following data set is given: The correct statement for the covariance A and correlation coefficient B of x… · JUNE 2013