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