Data Analysis

ABC26PH0962 · In a conductometric experiment for estimation of acid dissociation constant of acetic acid, the following values were obtained in four sets… · JUNE 2015

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(-|2x-12|) the average of x would be · JUNE 2019

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

ABC26PH0954 · In least square fitting of a data set {XiYi} 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