STT206

A. A logical approach used in an investigation to indicate possible alternatives or choices from which an acceptable solution may be derived is called______

B. 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

C. Like other quartiles, the median quartile is at what percent mark:_____%

D. Purposive samples can be occasionally referred to as ______ samples

E. The second quartile is equivalent to the _________

F. A summary measure that describes any given characteristic of the population is known as a ________

G. The first moment about mean is given by [ H_{1}=]

H. Classification of data based on sources gives rise to __________

I. 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____

J. Method of forecasts used to generate the general picture (or trend) behind a set of data or time series is ______________

K. The conjectural statement a postulate, or a proposition about an assumed relationship between two or more variables is known as _____

L. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?

M. The mathematical method of determined the points estimate of ‘a’ and ‘b’ from the available sample points is called ____ method

N. The measure of the degree of uniformity of observations in a given set of data can be said to be _____

O. Variables that assume any value within an interval or have the property of infinite divisibility are _____ variables

P. Variables whose values are whole numbers or integers are called _________

Q. ANOVA means _______

R. Forecasts that concern the distant future are _______ forecasts

S. The payoffs associated with each possible outcome in a decision problem should be listed in ______ table

T. In null hypothesis for a Chi-square test, both variables are _____

U. Multiple regression is also known as _____ regression

V. Correlation is used to determine the extent at which the variable are correlated is called_________ correlation

W. Compute the harmonic mean of 5, 6 and 7

X.  Quantitative variable can be classified into _________

Y. 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 _______

Z. Data which are collected by someone else or some organization either in published or unpublished forms is called ________ data

AA. Under coefficient of correlation, When r = 0 i.e. there is ________ relationship

AB. Forecasts concerning the near future are known as ______ forecasts

AC. Compute the harmonic mean of 5, 6 and 7

AD. When an investigator uses questionnaire to collect data from group of people in a population, such data is called ______data

AE. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?

AF.  Correlation values ranges from ________

AG. Calculate the variance of the date in the table below

AH. Data collected on a particular variable or set of variables over time is called _________

AI. 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

AJ. Where T.S.S is 172.5 and W.S.S.S is 125.5, B.S.S.S will be ________

AK. Indicators which reflect the relative changes in the level of certain phenomenon in any given period are ________

AL. Data collected from CBN website are called ________ data

AM. Forecasts based solely on past and present values of the variable to be forecast is called_______ forecasts

AN.  The boundaries separating the items in a given distribution into quarters are called ______

AO. 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 _______

AP. The measure of dispersion that ensures highest degree of reliability is ___________

AQ. If wale predicts that value of 50kg bag of rice will rise in 2022 based on past year (2016) and present year (2019), wale assumption is based on ____

AR. Data collected on a particular variable or set of variables over time is called _________

AS.  The difference between the highest observation and the lowest observation is called ________

AT.  Quantitative variable can be classified into ________

AU. The difference between the highest observation and the lowest observation is called ________

AV. When the correlation coefficient r, equals zero, then __________

AW. When the correlation coefficient r, equals zero, then __________

AX. A graphical method of showing correlation between two variables is called __________

AY. A method that involves conference techniques by which a group of people attempts to find solution for specified problems is known as _______

AZ. Distributions involving two discrete variables are called ________

BA. Variables whose values are whole numbers or integers are called ________

BB. Distributions in which there are only one variable are called _________

BC. Variables whose values are given as numerical quantities is called _____ variables

BD. Given the data, 5, 8, 3, 4, 6, 1. Obtain first non-central moment

BE. The chi-square test is not very effective if the sample is _______

BF. Sampling is simply a process of learning about the __________________ on the basis of a sample drawn from it

BG. Correlation values ranges from _________

BH. A graphical method of showing correlation between two variables is called __________

BI. Calculate the mean of the date in the table below

BJ. 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

BK. In simple linear regression, the numbers of unknown constants are ______

BL. 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 ____

BM. Range of 8, 12, 5, 15 is ______

BN.  The boundaries separating the items in a given distribution into quarters are called ________

BO. _______ is value of the sample statistic which is taken as an approximation of the parameter value

BP. The degree of randomness of selection would depend upon the process of selecting the items from the _________

BQ. The degrees of freedom for the test statistic for μ when σ is unknown is __________

BR.  Any characteristics of an object that is capable of assuming different values is called _______