Category: STT206 0 STT206 1 / 50  Correlation values ranges from ________ -2 to 2 0 to 1 -1 to 1 -1 to 0 2 / 50 A graphical method of showing correlation between two variables is called ________ Cartesian diagram dotted plotting none of the above scatter diagram 3 / 50 Under correlation coefficient, When r = +1, there is a ________linear relationship Check 4 / 50 Hypothesis testing starts with a statement about population parameters such as _________ Check 5 / 50 Data which are collected by someone else or some organization either in published or unpublished forms is called ________ data Check 6 / 50 Calculate the variance of the date in the table below 0.54 1.5 0.84 0.95 7 / 50  Variables whose values are fractional and are points on an internal are called _________ discrete variables none of the above continuous variables whole variables 8 / 50 The measure of dispersion that ensures highest degree of reliability is ___________ Check 9 / 50 Forecasts that concern the distant future are _______ forecasts Check 10 / 50 Distributions in which there are only one variable are called __________ all of the above bivariate distributions none of the above univariate distributions 11 / 50  A bus starts with 6 people and stops at 10 different stops, how many different ways can the 6 people depart if any passenger can depart at any bus stop _________ 540 120 1000000 1200000 12 / 50  The following are measurement scales except ________ ordinal interval none of the above nomial 13 / 50 Where T.S.S is 172.5 and W.S.S.S is 125.5, B.S.S.S will be ________ Check 14 / 50 Any characteristics of an object that is capable of assuming different values is called __________ variable concept category constant 15 / 50 Analysis of Variance (ANOVA) is a test for equality of _____ Check 16 / 50 Multiple regression is also known as _____ regression Check 17 / 50 The following are types of correlation except _________ negative quadratic linear positive 18 / 50 Correlation is used to determine the extent at which the variable are correlated is called_________ correlation Check 19 / 50 The branches of statistics that deals with mutual dependence or inter-relationship of two or more variables is _____ Check 20 / 50 The difference between the highest observation and the lowest observation is called ________ coefficient of variation the range standard deviation variance 21 / 50 A method that involves conference techniques by which a group of people attempts to find solution for specified problems is known as _______ Check 22 / 50 Sampling is simply a process of learning about the __________________ on the basis of a sample drawn from it Check 23 / 50 Like other quartiles, the median quartile is at what percent mark:_____% Check 24 / 50 A logical approach used in an investigation to indicate possible alternatives or choices from which an acceptable solution may be derived is called______ Check 25 / 50 The degree of randomness of selection would depend upon the process of selecting the items from the _________ Check 26 / 50 The values of (xi,yi) are given as (1,2), (2,4), (3,8), (4,7), (5,10), (6,5), (7,14), (8,16), (9,2), (10,20) find the value of summation yi 80 88 81 84 27 / 50 The conjectural statement a postulate, or a proposition about an assumed relationship between two or more variables is known as _____ Check 28 / 50 Data collected from CBN website are called ________ data Check 29 / 50 Forecasts concerning the near future are known as ______ forecasts Check 30 / 50 Distributions involving two discrete variables are called ___________ bivariate distributions none of the above all of the above univariate distributions 31 / 50 If the points on the scatter diagram show no tendency either to increase together or decrease together the value of r will be close to _______ Check 32 / 50 _____________________ provides various types of statistical information of either Qualitative or quantitative nature Check 33 / 50 Method of forecasts used to generate the general picture (or trend) behind a set of data or time series is ______________ Check 34 / 50 Compute the harmonic mean of 5, 6 and 7 5,58 4.77 2.57 3.56 35 / 50 Variables whose values are whole numbers or integers are called ________ none of the above continuous variables whole variables discrete variable 36 / 50 Distributions in which there are only one variable are called _________ bivariate distributions univariate distributions none of the above all of the above 37 / 50 Variables that assume any value within an interval or have the property of infinite divisibility are _____ variables Check 38 / 50 The method of least squares dictates that we choose a regression line where the sum of the square of deviations of the points from the line is _______ Check 39 / 50 A bus starts with 6 people and stops at 10 different stops, how many different ways can the 6 people depart if any passenger can depart at any bus stop ____ 120 1000000 540 1200000 40 / 50 The values of (xi,yi) are given as (1,2), (2,4), (3,8), (4,7), (5,10), (6,5), (7,14), (8,16), (9,2), (10,20) find the value of summation yi 81 80 88 84 41 / 50 Distributions involving two discrete variables are called __________ none of the above all of the above bivariate distributions univariate distributions 42 / 50 Variables whose values are whole numbers or integers are called _________ none of the above continuous variables discrete variable whole variables 43 / 50  Any characteristics of an object that is capable of assuming different values is called _______ category constant variable concept 44 / 50 The measure of the degree of uniformity of observations in a given set of data can be said to be _____ Check 45 / 50 Consider a set of data on monthly sales of a company’s product, the mean of which was found to be N240,000; the mode found to be N135,000; and the standard deviation found to be N85,000. The Pearson’s No. 1 Coefficient of skewness would be____ Check 46 / 50 Scale that has all the properties of the nominal, ordinal and interval scales including the additional property of having an absolute zero point is known as ____ scale Check 47 / 50 Variables whose values are fractional and are points on an internal are called _________ discrete variables none of the above continuous variables whole variables 48 / 50  The boundaries separating the items in a given distribution into quarters are called ________ ranges quartiles deviation mean deviation 49 / 50 The values of (xi,yi) are given as (1,2), (2,4), (3,8), (4,7), (5,10), (6,5), (7,14), (8,16), (9,2), (10,20) find the value of summation xi 65 50 55 60 50 / 50 Out of all measures of dispersion, the easiest one to calculate is_____ Check Restart quiz Rate this quiz Send feedback
