Question MCQ1 : The two possible values of each in a Bernoulli process Xi are often called?
Answer: “success” and “failure”
Question MCQ2 : The negative Binomial variables may be interpreted as what?
Answer: Random waiting times
Question MCQ3 : The probability tossing a coin once and get a head is?
Question MCQ4 : The total probability for any event is?
Question MCQ5 : If a random variable X takes only integral values it can be called?
Answer: Discrete probability distribution.
Question MCQ6 : The normal distribution was first discovered by English Mathematician____?
Question MCQ7 : The following are properties of normal distribution curve except
Answer: The curve is not symmetric about a vertical axis
Question MCQ8 : A random variable X has normal Distribution, and it is referred to as ___
Answer: a normal random variable
Question MCQ9 : Using normal tables, find the values of the following probabilities: P(-1.50 < z < 2.50)
Question MCQ10 : Given a normal distribution with mean of 230 and standard deviation of 20, what is the probability that an observation from this population is: Greater than 280
Question MCQ11 : We know that for a binomial variate X with parameter n and p is ____
Answer: E(X) = np and Var(X) = npq
Question MCQ12 : Poisson distribution was derived in what year?
Question MCQ13 : Poisson distribution may be obtained as a limiting case of which distribution?
Answer: Binomial probability distribution
Question MCQ14 : The mean number of misprints per page in a book is 1.2. What is the probability of finding on a particular page no misprints?
Question MCQ15 : A statistical hypothesis test is a method of making decisions using ___?
Answer: Data from a scientific study.
Question MCQ16 : The following are statistical test tools except
Answer: E â€“test
Question MCQ17 : One out of the following is assumption for F-test for equality of variances.
Answer: The samples are simple random samples
Question MCQ18 : Chi-square distribution test one among the following:
Answer: Goodness of fit
Question MCQ19 : ANOVA can be how many ways?
Answer: One-way or two-way
Question MCQ20 : Statistics that do not assume the data or population have any characteristic structure or parameters is called?
Answer: Non-parametric statistics
Question MCQ21 : In statistics, the term non-parametric statistics has at least how many different meanings?
Question MCQ22 : Price and supply of a commodity is example what correlation?
Answer: Positive correlation
Question MCQ23 : Rainfall and Farm yield is example what correlation?
Answer: Positive correlation
Question MCQ24 : Tax rate and consumption demand is example what correlation?
Answer: Negative correlation
Question MCQ25 : Karl Pearsonâ€˜s coefficient of correlation isâ€¦
Answer: Non-Parametric statistic
Question MCQ26 : Spearmanâ€˜s Rank Correlation Coefficient, usually denoted by?
Answer: Ï (Rho)
Question MCQ27 : A more accurate way of finding the line of best fit is through the use ofâ€¦
Answer: Least square method
Question MCQ28 : A simple regression model comprise of how may variables?
Question MCQ29 : In simple regression model how many independent variable do we have?
Question MCQ30 : Y = a + bX + e.
Answer: Simple regression model
Question MCQ31 : In probability theory central limit theorem states that given a certain conditions the mean of a sufficiently _________ of iterates.
Answer: large number
Question MCQ32 : By the law of large numbers, the sample averages converge in probability and almost surely to the expected valueâ€¦
Answer: Î¼ as n â†’ âˆž.
Question MCQ33 : Ten unbiased coins are tossed simultaneously. Find the probability of obtaining: Exactly six heads
Question MCQ34 : All these are types of Index Numbers except
Answer: Value added tax index number
Question MCQ35 : Below are not problems in the construction of Index Numbers except
Answer: Choice of formula
Question MCQ36 : Below ate methods of constructing index numbers except
Answer: Simple aggregate
Question MCQ37 : One of these is not a weighted Aggregate method
Answer: Karl Pearsonâ€™s Price Index
Question MCQ38 : Below are Uses of Index Number except
Answer: Use to measure sick people
Question MCQ39 : Data can be classified into two major sources from which they are obtained
Answer: Primary and Secondary data
Question MCQ40 : The following are disadvantages of primary data except
Answer: Less accurate
Question MCQ41 : The following are advantages secondary data except
Answer: Accurate and Reliable
Question MCQ42 : Data are also classified based on the form except
Answer: Primary Data
Question MCQ43 : _________ combine the features of cross-sectional and time-series data.
Answer: Panel Data
Question MCQ44 : The Sources of Secondary data are as follows except
Answer: Household Survey
Question MCQ45 : Below are some publications in Nigeria except
Answer: Daily Consumption of Beans
Question MCQ46 : Researchers collect data in order to test _______ and to provide empirical support for explanations and predictions.
Question MCQ47 : Sub-set of population is called?
Question MCQ48 : A particular value of the population, such as the mean income or the level of formal education, is called
Answer: A parameter
Question MCQ49 : Below are the functions of money except
Question MCQ50 : To accurately estimate unknown parameters from known statistics, researchers have to effectively deal with one of these problems:
Answer: The size of the sample
Question FBQ1 : A _______ random variable is the simplest random variable.
Question FBQ2 : A Bernoulli process is a _____ or infinite sequence of binary random variable
Question FBQ3 : Several random variables and probability distributions beside the__________ itself may be derived from the Bernoulli process
Question FBQ4 : The negative Binomial variables may be interpreted as _________ waiting times
Question FBQ5 : A Bernoulli random variable is one which has only _________ and 1 as possible values.
Question FBQ6 : A Bernoulli random variable is the simplest random variable. It models an experiment in which there are only two outcomes. Generically, we say that X=1 is a success and X=0 is a failure. We say that p is the _______â€– probability.
Question FBQ7 : ______ the probability of success is constant for each trial. Then q = 1-p, is the probability of failure in any trial.
Question FBQ8 : P(r) = P( X = ______ )
Question FBQ9 :
Since these probabilities are the successive terms in the Binomial expansion (q + p)n, it is called the ________ distribution
Question FBQ10 : Total probability is _____
Question FBQ11 : The normal distribution with is referred to as the standard ______ distribution.
Question FBQ12 : If X has a normal distribution with the ______ of Î¼ and the deviation , then is the standard normal distribution,
Question FBQ13 : Poisson distribution may be obtained as a limiting case of ___________probability distribution under the following conditions
Question FBQ14 : The critical region of a hypothesis test is the set of all outcomes which cause the null hypothesis to be rejected in favour of the _________ hypothesis.
Question FBQ15 : Statistical hypothesis testing is sometimes called _______data analysis
Question FBQ16 : Common test Statistics are; t-test, z-test, chi-square test and f-test which is sometimes referred to as analysis of ___________ test
Question FBQ17 : t-test for the significance of single mean, population variance being unknown. True or False? _____
Question FBQ18 : One of the assumptions for Studentâ€™s test: The parent population from which the sample is drawn is not normal. True or False _________
Question FBQ19 : The sampling distribution of F-statistics does not involve any population parameters and depends only on the degrees of freedom n1 and n2. True or False _____.
Question FBQ20 : of _________ of fit and is used to test if the deviation between observation
Question FBQ21 : Under the null hypothesis that there is no significant difference between the observed and the _________ values.
Question FBQ22 : Karl _________ proved that the statisticâ€¦
Question FBQ23 : In statistics, the term non-parametric statistics refers to statistics that do not assume the data or population have any characteristic structure or_______________.
Question FBQ24 : Non-parametric models differ from parametric models in that the model structure is not specified a ______________ but is instead determined from data.
Question FBQ25 : The most frequently used tests include Kruskal- ________ one-way analysis of variance by ranks
Question FBQ26 : Spearman’s _______ correlation coefficient: measures statistical dependence between two variables using a monotonic function
Question FBQ27 : _______ signed-rank test: tests whether matched pair samples are drawn from populations with different mean ranks
Question FBQ28 : Suppose we are interested in testing Ho: P(+) = P (-) H1: P(+) â‰ _____Â
Question FBQ29 : Correlation provides an estimate of the relationship between _____ measurements, without any assumption of whether one comes before the other.
Question FBQ30 : Correlation coefficients have a value between _____ and +1.
Question FBQ31 : The correlation measures only the ________ of linear association between two variables while regression analysis is a statistical process for estimating the relationships among variables.
Question FBQ32 : Correlation is said to be positive when the values of two variables deviate in the opposite direction. True or False _______
Question FBQ33 : Correlation is said to be negative when the values of two variables deviate in the same direction. True or False _______
Question FBQ34 : Mutual dependence is the situation when the phenomena under study inter-influence each other. True OR False ____?
Question FBQ35 : Given two variables X and Y: If r = +1, there is a perfect direct relationship between Y and X. If r = -1, there is a perfect inverse or negative relationship between Y and X. If r = _________ there is no relationship between Y and X.
Question FBQ36 : One of the assumptions order to use the Pearson product-moment correlation: The measures are approximately normally distributed True or False _____?
Question FBQ37 : In regression analysis there are _____________ types of variable
Question FBQ38 : Typical regression model is specified in form of Y = a + b__ + e.
Question FBQ39 : Independent Variable is the variable which influences the value of the __________variable or which is used for prediction.
Question FBQ40 : A more accurate way of finding the line of best fit is the least square method. True OR False ____?
Question FBQ41 : Central limit theorem states that given a sufficiently large sample size from a population with a finite level of variance, the mean of all samples from the same population will be approximately equal to the mean of the population. True OR False ____?
Question FBQ42 : Let us suppose that Y1, Y2, Yn,…, are independent and identically distributed with ______ and finite variance Ïƒ2.
Question FBQ43 : The CLT can tell us about the distribution of large sums of random variables even if the distribution of the random variables is almost _________.
Question FBQ44 : The central limit theorem applies in particular to sums of independent and __________distributed discrete random variables.
Question FBQ45 : A random orthogonal matrix is said to be distributed uniformly, if its distribution is the not normalized Haar measure on the orthogonal group O(n, R). True or False ________?
Question FBQ46 : A linear function of a matrix M is a linear combination of its elements (with given coefficients), is the matrix of the coefficients. True or False ________?
Question FBQ47 : Laspeyreâ€™s Price Index or Base year method is a Weighted Aggregate Method. True or False ________?
Question FBQ48 : Fisherâ€™s Price Index â€“ Irving Fisher advocated the geometric cross of Laspeyreâ€™s and ___________Price index numbers.
Question FBQ49 : Data can be classified base on the sources from which they are obtained into primary and ______________
Question FBQ50 : A sample is any subset of sampling units from a population. True or False ________?
Question MCQ1 : The two possible values of each in a Bernoulli process Xi are often called?