FBQ1: The t test was Mean and ____ of two samples to make comparism Answer: Standard deviations FBQ2: Given the following simple regression model Y = ao + a1X1 + a2X2, the dependent variable in the model is _____ Answer: Y FBQ3: Given the following simple regression model Y = ao + a1X1, the independent variable in the model is _____ Answer: X1 FBQ4: Application of Simple Linear regression analysis is the way by which we subject different data to statistical analysis by using computer software such strata, e-view to analyse and predict the relationship between the dependent variable and _________ Answer: independent variable FBQ5: In the case of more than one explanatory variable is called _____ regression. Answer: multiple FBQ6: In the case of one explanatory variable is called _____ linear regression. Answer: simple FBQ7: In statistics, _______ is an approach for modelling the relationship between s scalar dependent variable y and one or more explanatory variables denoted x Answer: linear regression FBQ8: Regression analysis is also used in casual relationship between a linear model that is between the dependent variable to an ________ Answer: independent variables FBQ9: Regression analysis is widely used for ______ and forecasting Answer: prediction FBQ10:  Regression analysis is a statistical process for estimating the relationship among _______ Answer: variables FBQ11: The term regression was introduced by ________ Answer: Francis Galton FBQ12: _____ is a test that allows us to compare a collection of categorical data with the theoretical distribution Answer: Chi Square Goodness of Fit FBQ13: It is ____ when the descendants were able to locate their origin which is the primitive function. Answer: integration FBQ14: ____is an approach use in ANOVA (that is a region analysis involving two qualitative factors) to detect whether the factor variables are additively related to the expected value of the response variables. Answer: Turkey’s Test of Additivity FBQ15: ______ is a statistical test that is used on paired nominal data Answer: Mc Nemar’s Test FBQ16: ________ are collections of test statistics that is used for the analysis of stratified categorical data Answer: Cochram–Mantel Statistics FBQ17: ______ is used when testing for independence in a contingency table. Answer: Yate’s correction for continuity FBQ18: _____ is a statistical test that is applied to categorical data to investigate how likely it is that any observed difference between the sets arose by chance and it is good for unpaired data that can be seen from large samples. Answer: Pearson’s Chi-square Test FBQ19: A _____ can said to be a measurement of how expectations are compared to results. Answer: Chi-square FBQ20: An______ can be defined as any statistical test in which the test statistics has an F distribution under a null hypothesis situation and it is usually used when comparing statistical models in a data set so that we can identify the mode that best fits the population where the date were sampled Answer: F test FBQ21: The T statistic was introduced in _____ by William Sealy Gosset, a chemist working for the Guinness Brewery in Dublin, Ireland Answer: 1908 FBQ22: A t-test is any statistical test in which the test statistic follows a student’s t _____ if the null hypothesis is supported. Answer: distribution FBQ23: A ______ is the set of all possible values of a particular statistic Answer: sampling distribution FBQ24: If the parameters are over estimated, the sampling errors are ________ Answer: positive errors FBQ25: If the parameters are under estimated, the sampling errors are ________ Answer: negative errors FBQ26: Sampling error (E) is defined as the difference between the sample statistic (s) and the ______ being estimated Answer: Population parameter FBQ27: The first important attribute of a sample is that every individual in the population from which it is drawn must have a known ____ chance of being included in it Answer: non zero FBQ28: ______ is a population commonly contains too many individuals to study conveniently Answer: samples FBQ29: Sampling where each member cannot be chosen more than once is called sampling ________ Answer: without replacement FBQ30: Sampling where each member of the population may be chosen more than once is called sampling _____ Answer: with replacement FBQ31: ______ theory deals with the study of the relationships that exist between a given population and the samples drawn from the population. Answer: Sampling FBQ32: Confidence interval is used to determine all reasonably likely values of the difference between two ______ Answer: population means FBQ33: Matching is carried out by identifying pairs of values consisting of one observation from each of the two _____ Answer: samples FBQ34: In an experimental research, the scientist may have two groups, an experimental group and a _______ Answer: control group FBQ35: _______ enables us to have an estimate of how sample mean deviates from the population mean Answer: interval estimation FBQ36: Interval estimation involves estimating an interval which is known as _________ Answer: confidence interval FBQ37: Another technique that can be employed with respect to the issue of rejecting or accepting Ho is ______ Answer: interval estimation FBQ38: The standard deviation of the sampling distribution is known as the ________ Answer: standard error FBQ39: In this situation, the population for which inferences is to be made is assumed to be normally distributed with _______ Answer: mean and variance FBQ40: If the 0.05 level of significance is to be used in a two tailed test, the 0.05 level is shared between the two ends of the tails giving 0.025 or ________ Answer: 2½% FBQ41: The _____ curve is one of the most popular models used in statistical tests of hypothesis Answer: normal FBQ42: The two tailed test gets its name from testing the area under both of the tails (sides) of a _______ Answer: normal distribution FBQ43: The one tailed test gets its name from testing the area under one of the tails (sides) of a ________ Answer: normal distribution FBQ44: ______ is a statistical test in which the critical area of a distribution is two sided and tests whether a sample is either greater than or less than a certain range of values. Answer: two tailed tests FBQ45: ______ is a statistical test in which the critical area of a distribution is one-sided so that it is either greater than or less than a certain value, but not both. Answer: one tailed tests FBQ46: In test of hypothesis, the maximum probability of risking a type 1 error is known as the ________ Answer: level of significance FBQ47: The probability (or risk) or committing ______ error is denoted by the Greek letter β Answer: type 2 FBQ48: The probability (or risk) or committing error ______on a true null hypothesis is denoted by the Greek letter α Answer: type 1 FBQ49: Type 2 error is a situation when one accepts the hypothesis when it should be ________ Answer: Rejected FBQ50: _______ occurs when/if an hypothesis (Null hypothesis) is rejected when it should be accepted and this occurs when the hypothesis value falls within acceptance region. Answer: type 1 error MCQ1: The standard deviation is to the mean as the ____________ is to the regression line. Answer: SSR MCQ2: The regression equation for predicting number of speeding tickets (Y) from information about driver age (X) is Y = -.065(X) + 5.57. How many tickets would you predict for a twenty-year-old? Answer: 4.27 MCQ3: A regression analysis is inappropriate when ________ Answer: There is heteroscedasticity in the scatter plot. MCQ4: The _____ distribution has been applied to model the behaviour of random variables limited to intervals of finite length in a wide variety of disciples Answer: None of the options MCQ5: When a die is thrown once, the probability of getting one is _____ Answer: None of the options MCQ6: ______ measure is the standard way of assigning a measure to a subsets of an n-dimensional volume Answer: Lebesgue MCQ7: One explanatory variable is called a ______ Answer: Simple Regression MCQ8: Abdalla company prints baseball cards. The company claims that 40% of the cards are rookies, 70% veterans and 10% are all stars. Suppose a random sample of 100 cards has 50 rookies, 48 veterans and 8 all-stars. Using 95% level of significance, Calculate the claim of the company Answer: 22.34 MCQ9: An F test is a statistical test in which the test statistics has ____ distribution under a null hypothesis situation Answer: None of the options MCQ10: In Probability and Statistics, a probability distribution assigns a probability to each measurable sunset of the possible outcomes of a ______ Answer: Random experiment MCQ11:  When an equation is in a general term in a multinomial expansion it is called ____ Answer: Multinomial distribution MCQ12: A Company short lists 12 applicant for an interview out of which 4 are men. If there are only five vacant posts to be filled, find the probability that the list of successful applicant contains at least 2 men. Answer: None of the options MCQ13: If an individual were selected at random from a large group of adult females, the probability that it has height M is precisely 68 inches (that is 68.00 inches) would be zero. What is the probability that M is between 67.00 inches and 68.00 inches. Answer: None of the options MCQ14: ______ is a random variables that we assigns a probability to each possible value Answer: Discrete random variables MCQ15: A deck of cards has a uniform distribution because the likelihood of drawing a heart, a club, a diamond or spade is equally _____ Answer: Likely MCQ16: The Cauchy distribution is named after _____ Answer: None of the options MCQ17: Null hypothesis is denoted as ______ Answer: Ho MCQ18: _____ error occurs when/if an hypothesis is rejected when it should be accepted Answer: Type 1 MCQ19: The numerical value of the decision rule is called _____ Answer: All of the options MCQ20:  A coin also has a uniform distribution because the _____ in a coin toss is the same Answer: Probability of getting either heads or tails MCQ21: Calculate the variance of uniform distribution given that (a + b) = 6/200 and b = 2.20 while a = 1.10 Answer: None of the options MCQ22: The two types of hypothesis are ______ and _____ hypothesis Answer: Null and Alternative MCQ23: In statistical analysis the 99% confident level is also known as _____ Answer: 0.01 MCQ24: A _____ is any statistical test in which the test statistic follows a student’s t distribution if the null hypothesis is supported. Answer: T test MCQ25:  In a statistics examination for secondary students, the 23 females used in the study has a mean score of 81 and a variance of 12 while the 20 males used has a mean score of 78 and a variance of 10. Do you think gender have an effect on the score of the secondary student at 99% level significance? Answer: None of the options MCQ26: _____ is used to determine all reasonably likely values of the difference between two population means Answer: None of the options MCQ27: A graph for frequency distribution can be supplied by a _____ Answer: All of the options MCQ28:  Ho in hypothesis testing is ___ Answer: Null of the options MCQ29:  When a random variable takes values from a continuous probabilities that are non zero, this can only refer to _____ Answer: Infinite intervals MCQ30: H1 in hypothesis testing is _______ Answer: None of the options MCQ31:  Given a constant b such that the function f(n) = bn square is 0,1,2. Find the probability of x is greater than 1 and less than 2 Answer: 0.26 MCQ32:  ______ is a type of probability distribution in which all outcomes are equally alike Answer: Distribution MCQ33: The t statistics was introduced in ________ year Answer: 1908 MCQ34: ______ test is used when testing for independence in a contingency table Answer: None of the options MCQ35: The t statistic was introduced by Willian Sealey Gosset a ______ working for Guinness Brewery in Dublin Finland Answer: None of the options MCQ36: _____ test is a statistical test that is used on paired nominal data Answer: Mc Nemar's MCQ37: _____ is a statistics process for estimating the relationship among variables. Answer: Regression analysis MCQ38: Given Z = Bo + B1X1 + B2X2. From the equation above, the explanatory variables are _______ Answer: All of the options MCQ39: Regression analysis is widely used for ______ and ______ Answer: Prediction and Forecasting MCQ40: In a statistics examination for secondary students, the 12 females used in the study has a mean score of 71 and a variance of 22 while the 10 males used has a mean score of 77 and a variance of 8. Calculate the confidence intervals at 99% level of significance. Answer: None of the options MCQ41:  The calculation of sampling distribution is a step forward to look at different ways of obtaining distribution of proportion process of _____ data Answer: Pooled MCQ42: The values of a parameter and that of the corresponding statistics are not always the same _____ Answer: Population MCQ43: _____ statistical test in which the critical area of a distribution is one-sided Answer: One-tailed test MCQ44: If 150 tosses are made of a fair coin, find the probability that between 38% and 78% will be heads Answer: None of the options MCQ45: Calculate the mean of a uniform distribution given that (a+b) = 7/128 and b= 6.40 while a= 2.10 Answer: None of the options MCQ46: The Cauchy distribution is often used in statistics as the canonical example of pathological distribution since both its mean and its variance are ______ Answer: Undefined MCQ47: Alternative hypothesis is denoted as ______ Answer: H1 MCQ48: ______ is a tentative statement in a statistical analysis Answer: None of the options MCQ49: One of the uses of statistics is to make a ______ Answer: Decisive decision MCQ50: Three out of the 9 finalists in an African American beauty competition are Nigerians. If two winners are to be selected, find the probability that; at least one of them would be a Nigerian. Answer: 0.58