Q1 The histogram’s shape can generally be of two types. They may be (bell-shaped) in which case the values are ranged systematically around the central maximum or they may be _.
Q2 When the origin of a moment is taken as the arithmetic mean of the variable, it is called as
Q3 When data is broken down into four equal parts or division, each part or division is called a
Q4 The is perhaps the most widely used measure of central tendency.
Q5 Measures of central tendency is also known as the of
Q6 Pictogram: - This is the use of shapes, figure or objects to represent . It entails the use of drawing of objects to represent items in a data.
Q7 A histogram is constructed by drawing for each .
Q8 A pie chart is particularly useful where it is desired to show the relative of the values or variables that make up a single overall __.
Q9 are diagrammatic representation of data with the use of bars, shapes, curves and other illustrative objects.
Q10 The consumption function of a consumer is given as C = 60 + 0.4 Yd. Where C = consumption and Yd is the disposable __.
Q11 The vertical axis (Y) represents the variable while the X axis which is the axis, represents the independent variable.
Q12 The coordinate of X is sometimes called and Y is called the of the point.
Q13 The class mark is the of the class interval and is obtained by adding the lower and the class limits or those of the class boundaries and divide by .
Q14 These numbers, indicated briefly by the exact numbers 49.5 and 52.5 are called
Q15 If heights are recorded to nearest inch, the class interval 60 – 62 theoretically includes all measurement from 59.5 to
Q16 In an attempt to introduce variable into class intervals, class boundaries emerge
Q17 A symbol defining a class such as 41 – 50, is called the class
interval. The end numbers 41 and 50 are called class limits, the smaller
(41) is the class limit and the larger (50 is the class limit.
Q18 The relative frequency is the ratio of the of a class to the total number of _.
Q19 Cumulative frequency is the summing up of the frequencies of each while cumulative frequency is the listing of the classes and their cumulative frequency.
Q20 Whether the data to be collected is primary or secondary, the collection may be done in either of the two ways. (a) enumeration; and (b) enumeration
Q21 Sampling error measures the between the sample’s behaviour and the population’s _.
Q22 An important advantage of quota sampling is that it is not in terms of money and to conduct.
Q23 When population is homogenous (same), simple random sampling or systematic sampling is _.
Q24 A is one in which every member of the population has equal chance of being selected in the sample
Q25 The process of selecting samples from the population to ensure accuracy representation and unbiasedness is known as _.
Q26 is a collection of all possible usable information as may be required or as clearly defined.
Q27 A sample is simply put as a of the unit of a population
Q28
are better used for research relative to complete enumeration
(population) because it is carried out with less efforts, less cost,
shorter time, greater accuracy, greater scope coverage and greater
application.
Q29 A is just part selected to represent the population.
Q30 Quantitative data are observations corresponding to variable while continuous data are observations corresponding to a variable.
Q31 While gender is a , the observations, male or female are .
Q32 It should be noted that the list of a variable assumes is called
Q33 Continuous variable on the other hand is a quantitative variable whose possible values form some of numbers.
Q34 Simply put, discrete variables are variables whose possible values can be listed.
Q35 A discrete variable usually involves a of something, such as the of sibling s a person has, the number of cars owned by a family, or the number of students in a statistics class.
Q36 Measures of central tendency are the statistical which show the degree to which any given set of value or data will towards the , central point of the data
Q37 The skewness of a could be described with respect to its and degree and this is represented by a computed of skewness.
Q38 Positive occurs when the mean is increased by some abnormally while negative skewness occurs when the mean is reduced by abnormally
Q39 Moment refers to the direction of in a set of data. Moments can be about the origin as well as about the
Q40 When population is i.e. comprises of categories or form, a sample can be taken.
Q41 When population is __, simple sampling or sampling is appropriate
Q42 Statistics is the science of collecting, summarising and information in order to draw
Q43 An is defined as the result or set of results from an
Q44 Statistics involves the careful of the data collected in form of and the of such data.
Q45 In the of a die; the is S = {1, 2, 3, 4, 5,6} while the S1{odd numbers: 1, 3, 5}, S2{prime numbers: 2, 3, 5} are called
Q46 is the process of selecting from some larger set of data whose we wish to
Q47 The important characteristics of statistics is that to be described is
Q48 On the basis of the _, we infer things or conclusion about the __. This inference about populations on the basis of the sample is known as inference.
Q49 events are said to be mutually if the occurrence of either the possibility of the occurrence of other event.
Q50 If the index figure for year 2013 was 100 and that for 2014 was 108, we should know that was higher.
Q51 In a of a fair die, the probability that a 5 is rolled, that the die comes up odd is
Q52 If events are such that one has no on the other, then they are events
Q53 A random variable has either a number of possible values or a number of possible values
Q54 is defined as the degree of of a distribution when it is compared with a distribution
Q55 check and correction are used to guide against
Q56 is a general class of used in measuring the and dispersion of variable x
Q57 In statistics, the term “Population” refers to the whole of any group of or items whose members (units) possess the basic and clearly defined
Q58 An data is an array of such that each item has its own frequency or occurrence.
Q59 By definition, __is the square root of the of the sum of squares of deviation of the values in the from the mean.
Q60 A statistical table is an presentation of data in and
Q61 What is the general functional equation of a straight line graph?
Q62 Class/group is the categories for grouped data. Which of the following not a class group?
Q63 Generally, there are numerous sources of data, the commonest ones are the following except one.
Q64 What is the geometric mean of 2, 3, 4, 6, 5.
Q65 In systematic sampling, if the list comprises a
population of say 25,000 and the sample required is 500, what will be
the selection that will yield the required sample?
Q66 One of the following is not a basic technique used in statistical sampling include.
Q67 What is called complete enumeration?
Q68 All except one is an example of continuous variable.
Q69 Which of these is not allowed in a continuous variable as possible values?
Q70 What is a discrete variable? is a variable whose possible values can be listed
Q71 The probability for an event which is certain is _______________
Q72 Mr. Ugbede Ayibo earned N15, 000 in 1990 and N25,
000 in 1995 and If the average CPI (1990 = 100) for 1995 was 320, his
physical salary in 1995 was_____________
Q73 If Mrs Ajanigo Mary Obaka, a trader can make a
profit of N2,000 with a probability of 0.7 and a loss of N500 with a
probability of 0.5, determine her expectation _______________
Q74 The value of 'K' in a platykurtic distribution is ____________________
Q75 The value of 'K' in a a leptokurtic distribution is _____________________
Q76 The value of 'K' in a mesokurtic distribution is ________________
Q77 If the scores of 10 students in a mathematics
test are as follows: 27, 16, 10, 19, 10, 11, 28, 16, 14, 35, the range
is ______________
Q78 A distribution which is flat-topped is said to be _______________
Q79 Given that the probability that Obaka Abel
attends a party is independent of Ubaydullah attending the same party,
if the probability that Obaka attends is 2/3 and the probability that
Ubaydullah attends is 3/5, the probability that both of them attend the
party is _______________
Q80 If the lower and upper quartiles of a
distribution whose median is 1.56 are 0.48 and 2.37 respectively,
compute a co-efficient of skewness for the distribution _______________
Q81 The term for a distribution in which the mean, median and mode coincide is _______________
Q82 The degree of asymmetry or departure from symmetry of a distribution called ____________________
Q83 Find (a) the first and the (b) the second moments of the set of numbers: 2, 3, 4, 5, 6. ____________________
Q84 When the origin of a moment is taken as the _______________ of the variable, it is called a Central Moment.
Q85 Given the scores of 10 students as: 5, 4, 6, 2, 7, 4, 9, 2, 4, find the mode _________________
Q86 The list of observation a variable assumes is called _________________
Q87 The following is not an example of descrete variable _________________
Q88 The following is not an example of quantitative variable _______________
Q89 The following is not an example of qualitative variable _________________
Q90 The name for the data already collected by other
agency, organization or institution (private or public) and may exist
either in published or unpublished form is knowned as _______________
Q91 The name given to a data collected directly from the source is ________________
Q92 When data is broken down into ten equal parts or division, each part or division is called a _________________
Q93 Given the set of observation as 7, 12, 13, 15, 16, 17, 18, 19, 20, 25, find The lower quartile ___________________
Q94 When data is broken down into four equal parts or division, each part or division is called a ____________________
Q95 Given the scores of 8 students in an examination as 12, 5, 6, 2, 14, 10, 18 and 5, find the variance ____________
Q96 Given the scores of 8 students in an examination
as 12, 5, 6, 2, 14, 10, 18 and 5, find the standard deviation
_______________
Q97 The simplest of all the measures of dispersion _____________________
Q98 The two ways the median of a set of grouped data can be determined geometrically are ____________________
Q99 If Grace Obaka Abel company pays its sales people
N 6.50, N 7.50 or N 8.50 and the corresponding weight is 14, 10 and 2
respectively, calculate the weighted average mean _______________
Q100 If a final examination in a course is weighted 3
times as much as a quiz and a student has a final examination grade of
85 and quiz grades of 70 and 90, calculate the mean grade
______________________
Q101 If total weight (FX) is Σ f x = 47 and sum of
units (f) is Σ f = 19, calculate Weighted point average
____________________
Q102 If the net weights of the content of 5 coke
bottles selected at random are 85.4,84.9, 85.3, 85.0 and 85.4 in
kilogrammes, its arithmetic mean of the sample observation is
______________________
Q103 The general functional equation of a straight line graph is ______________
Q104 One of the following terms does not apply to graphical layout ____________________
Q105 Given that A and B are conditional events; a. P(A) = 0.4, P(B) = 0.3, Find p(A ∩ B) ________________________
Q106 In Inferential statistics, we usually start with
setting up a _______________________ specifying our assumptions or
guesses to be validated or refuted
Q107 Statistics of inference especially has to do with _______________
Q108 The theory of inferential statistics mostly linked with and estimate outcomes of events is ____________________
Q109 Statistics deals only with ___________________ of fact as no importance is attached to individual items.
Q110 Statistics if not carefully used can establish
wrong conclusion and therefore it should only be handled by
_______________
Q111 In spite of the relevance of statistics to
everyday activities, the field of study (statistics) is limited by the
_____________________
Q112 A civil engineer may use statistics to determine
the __________________ of various materials and perform some
durability test.
Q113 From a set of observation, mean = N279.76,
median = N279.06, mode =N277.50 and standard deviation = s = N15.60.
Find second co-efficient of skewness.
Q114 From a set of observation, mean = N279.76,
median = N279.06, mode =N277.50 and standard deviation = s = N15.60.
Find first co-efficient of skewness.
Q115 Given that the probability that Miss Grace Abel
attends a party is independent of Ubaydullah attending the same party.
If the probability that Grace Abel attends is 2/3 and the probability
that Ubaydullah attends is 3/5; What is the probability that both of
them attend the party?
Q116 Obaka Consulting pays its sales people N 6.50, N
7.50 or N 8.50. The corresponding weight is 14, 10 and 2 respectively.
Determine the weighted average mean.
Q117 Considering a simple experiment of tossing a
die, the six sample points, S = {1, 2, 3, 4, 5, 6}. Since the die is
balanced, each of the outcomes has equal chance of occurrence, which is
_____________
Q118 The price of a television set in 2014 and 2015
were N46,000 and N62,000 respectively. Compute the price relative using
2014 as the base year.