E-Exam Past Questions And Answers: STT206 / SMS202 - Statistics for Management Sciences II
Q1 The mean, mode, medium, variance etc are examples of _estimates.
Q2 __refers to the formula or statistic which has been chosen to provide an
estimate of the population value.
Q3 An is value of the sample statistic which is taken as an approximation of the
parameter value.
Q4 cannot control who fills out the questionnaire.
Q5 The concept of is central to sampling theory and to determining the size of a
sample.
Q6 is more convenient than simple random sampling.
Q7 the basic probability sampling design, and it is incorporated into all the
more elaborate probability sampling designs.
Q8 is to select a sample that is as similar as possible to the sampling population.
Q9 A single member of a sampling population is referred to as a
Q10 A particular value of the population, such as the mean income or the level of formal education, is
called a
Q11 These are problems encountered in the construction of index numbers except
Q12 Forecast simply means statement
Q13 It has been found that 2% of the tools produced by a certain machine are defective. What is the
probability that in a shipment of 400 such tools is
Q14 One way in which a representative sample may be obtained from a population is by
Q15 Sampling distribution is the
Q16 A particular value of the population, such as the mean income or the level of formal education, is
called
Q17 combine the features of cross-sectional and time-series data.
Q18 Government uses statistics during
Q19 Data collected for cross-section of subjects (population under study) at a time is called
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Q20 Data collected on a particular variable or set of variables over time is know as
Q21 advocate that the current year quantities are taken as weights
Q22 advocated the geometric cross of Laspeyre’s and Paasche’s Price index
numbers
Q23 Aggregate of prices (of all the selected commodities) in the current year as a percentage of the
aggregate of prices in the base year know as
Q25 reflect changes in the volume of goods produced or consumed know as _-
Q26 most common index numbers are the price index numbers which study changes in price level of
commodities over a period of time is know as
Q27 are indicators which reflect the relative changes in the level of certain
phenomenon in any given period
Q28 Under certainty, the decision maker simply the outcome of each alternative
and selects the one that best meets his/her objective
Q29 looks for the attributes or qualities of the product .i.e. comparison of the
best one
Q30 is the comparison of one thing with another that has similar features
Q31 __is a method base on two head is better than one.
Q32 Is the logical approach, it answers questions like What, Who, Where, How,
When and Why
Q33 defined as the logical and quantitative analysis of all the factors influencing
a decision
Q34 thinking considers end rather than means
Q35 The art of problem solving and decision making is base on
Q36 The scientific method for collecting, organizing, summarizing, presenting and analysing data is called
Q37 The two main types of statistics are
Q38 The number of times that a variable occur is called
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Q39 Frequency distribution involves
Q40 The probability that an event will occur is
Q41 The probability of obtaining an even number in a single toss of a fair die is
Q42 are forecasts based solely on past and present values of the variable to be
forecast.
Q43 If a die is tossed once. What is the probability of obtaining even or prime number?
Q44 y = a + b1X1 + b2X2 is
Q45 y = a + bx is
Q46 The probability of obtaining at least two heads in a toss of a fair die trice is
Q47 are based on past performances.
Q48 is not designed to test equality of several population variances.
Q49 The sum of the absolute difference between consecutives set of data xj and mean x of the data divided
by the number of data is
Q50 Two events A and B are said to be __, if they cannot occur together
Q51 The degree of asymmetry, or departure from symmetry of a distribution is known as
Q52 ANOVA can be (a) way classification or (b) two-way classification.
Q53 O1, O2, O3, ..........Ok, called frequencies.
Q54 All one tailed tests for at level of significance “α” will be right tailed tests
only with area “α” in the right.
Q55 Sampling distribution is the
Q56 analysis is the modern approach to decision making both in economics and
in business
Q57 The formula used in calculating Pearson’s No. 1 Coefficient of skewness is
Q58 A complete absence of skewness would have a coefficient of skewness equal to
Q59 leptokurtic, platykurtic and mesokurtic is otherwise known as
_distribution curve
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Q60 measures the degree of peakedness of a distribution. It is usually taken
relative to a normal distribution
Q61 The moment coefficient of kurlosis is used to calculate the of a distribution
Q62 Pearson’s first coefficient of skewness and Pearson’s second coefficient of skewness is called
Q63 is useful in the comparison of two or more sets of data which are measured
in the same units but differ to such an extent that a direct comparison of the respective standard
deviations is not very helpful
Q64 Given the arrayed data: X = 2,5,8,9,12,13,18,the range will be
Q65 can be said to measure the degree of uniformity of observations in a given
set of data
Q66 can be an unsatisfactory measure of dispersion because it is affected by
extreme values or items which renders it unrepresentative of majority of the set of data
Q67 variables include sex, in religious or party affIliation, genotype, blood group, place of residence know
as
Q68 scale has all the properties of the nominal, ordinal and interval scales including the additional
property of having an absolute zero point know as
Q69 can be defined as a management tool for making decision. It is also a
scientific approach to presentation of numerical information in such a way that one will have a maximum
understanding of the reality represented by such information.
Q70 Government uses as a tool for collecting data on economic aggregates such
as national income, savings, consumption and gross national product
Q71 is a variable whose values are given as numerical quantities
Q72 In studying the nutritional well being of pupils in a primary school, the is a
pupil in the school.
Q73 is a characteristic that assumes different values for different entities
Q74 is the part of the population that is selected for a study
Q75 _variable that can assume both decimal and non decimal values
Q76 _____________ occur naturally in all spheres of business activity.
time series
Q77 ________can be used to generate the general picture (or trend) behind a set of data or time series.
moving ave rage
Q78 ________ are forecasts based solely on past and present values of the variable to be forecast.
extrapolation
Q79 ___________ are forecasts concerning the near future.
short term forecast
Q80 ________ are based on past performances.
forecasts
Q81 __________ is not designed to test equality of several population variances.
Anova
Q82 ANOVA technique enables us to compare several __________ means simultaneously.
populatio n
Q83 ANOVA can be (a) ______ way classification or (b) two-way classification.
one
Q84 __________ as a tool has different dimensions and complexities.
Anova
Q85 O1, O2, O3, ..........Ok, called ____________frequencies.
observed
Q86 ___________ test of goodness of fit.
Chi-square
Q87 The square of a standard normal variable is called a __________
Chi-square
Q88 All one tailed tests for _____ at level of significance “α” will be right tailed tests only with area “α” in the right.
Ho
Q89 For _____tailed tests, the critical valuesare located in the right tail of F-distribution with area (α/2) in the right tail.
two
Q90 ______statistic is the ratio of two independent chi-square variates divided by their respective degrees of freedom.
F
Q91 Hypothesis testing starts with a ___________ about population parameters such as mean.
statemen t
Q92 __________ testing or testing a hypothesis are used interchangeably.
hypotheses
Q93 Relationship that connect three or more variables together are called
multiple correlation regre ssion
Q94 Two variables can either be positively or _________correlated.
negatively
Q95 3 main types of curve are __________
Exponential curve
Hyperbolic curve
Power curve mod el
***all of the above
Q96 ____mathematical method of determined the points estimate of ‘a’ and ‘b’ from the available sample points.
Lea st Square Method
Q97 Regression line is fitted into the ________diagram
scatter
Q98 y = a + b1X1 + b2X2 is________________
multiple regression
Q99 y = a + bx is ___________
simple regression
Q100 _____________ analysis can be defined as the relationship between two or more variables.
regression
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