# SMS 201 TMA ANSWERS 1-4

Q1 The scientific method for collecting, organizing, summarizing, presenting and analysing data is called

**statistics**

mathematics

analysis

numerical

Q2 The normal distribution curve is otherwise known as

leptokurtic

platykurtic

**mesokurtic**

normalkurtic

Q3 The degree of peakedness of a distribution is known as

moment

deviation

skewness

**kurtosis**

Q4 The standard deviation of the set of data 7,6,3,4,10 is

3.45

**2.45**

4.45

5.45

Q5 The mean deviation of the set of data 7,6,3,4,10 is

**2**

3

4

5

Q6 The mean deviation of the set of data 8,7,11,6,16,4,11

**11**

12

13

14

Q7 Find the mode of the data below 2,3,3,4,2,6,3,3,4,4,4

1.5

2.5

**3.5**

4.5

Q8 Which of the following gives the median of a grouped frequency distribution

Lm + (N/2 – CFm1)Cm \r\nFm+1 Fm CFm1

Lm + (N/2 – CFm1)Cm

) Lm (N/2 – Fm)Cm

**(d) Lm + (N/2 – CFm1)Cm**

Q9 Find the median of the following data 8,3,5,2,6,7,3,9

**5.5**

5

4.5

4

Q10 Find the root mean square of the heights in ft of 5 students in a class – 3,2,4,6,7

**4.775**

2.775

3.775

4.7

Q11 Obtain the harmonic mean of the following data 3,2,6,4,

3.1

4.1

**3.2**

4.2

Q12 Obtain the geometric mean of the following data 3,2,6,4

**3.46**

3.56

2.46

4.46

Q13 24. The following are advantages of arithmetic mean except

it is easy to compute

it has determinate exact value

**it can be distorted by extreme values in the distribution**

it provides a good measure of comparison

Q14 1. The number of employees in commercial banks in Ibadan are given as 4368, 4387, 4331, 4383,

4356, 4369. Find the mean (a)

3370.14

45470

**4370**

4370.14

Q15 The heights in meters of 12 wallnut seeding, after twenty years growth are 4, 5, 6, 3, 7, 2, 8, 5, 3, 4.8,

4.5, 7.2, 5.2.

5

**5.17**

4

4.17

Q16 These are problems encountered in the construction of index numbers except

the choice of items

the choice of a base period unit

the choice of weights

**the choice of considered**

Q17 Forecast simply means statement (a) (b)©

**that predicts future with the help of both past and present**

that predicts past with the help of both past and future information

that calculating the trend estimate of the information

none of the above

Q18 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

0.006

0.006

**0.007**

0.007

Q19 One way in which a representative sample may be obtained from a population is by

**simple random sampling**

hard random sampling

random sample

sampling population

Q20 Sampling distribution is the ___________

**Most fundamental of inductive statistics**

most of inductive sample

inductive fundamental of population

statistical sampling population

Q21 The scientific method for collecting, organizing, summarizing, presenting and analysing data is called

**statistic**

mathematics

analysis

numerical

Q22 The two main types of statistics are

inductive and encryptive

inductive and descriptive

encryptive and descriptive

**inductive and decriptive**

Q23 The number of times that a variable occur is called

mode

median

mean

**frequency**

Q24 Frequency distribution involves

**table showing values of variable(s) and rates of occurrence**

classification of data in rows and columns

distribution of measures of variation

distribution of data by measures of location

Q25 The probability that an event will occur is

0 <P(E) <1

1 <P(E) <0

**0 <P(E) <1**

1 <P(E) <0

Q26 The probability of obtaining an even number in a single toss of a fair die is

⅔

⅓

**½**

¼

Q27 The mode of the set of data 1,2,3,3,2, 1 is

0

2

3

**1**

Q28 If a die is tossed once. What is the probability of obtaining even or prime number?

⅔

⅓

⅕

**⅚**

Q29 Find the mode of the data below 2,3,3,4,2,6,3,3,4,4,4

1.5

2.5

**3.5**

4.5

Q30 The range of the set of data 5,4,4,3,3,3,3 is

7

3

4

**2**

Q31 The probability of obtaining at least two heads in a toss of a fair die trice is

**0**

½

⅓

¼

Q32 The harmonic mean of 2,4,6 is

6

0.9167

0.3056

**3.27**

Q33 Obtain the geometric mean of the set of data 2,4,6

36

6

**3.63**

4

Q34 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

range

mean deviation

**error of deviation**

standard deviation

Q35 Two events A and B are said to be _____, if they cannot occur together

independent event

nonmutually exclusive event

**mutually exclusive event**

mutually inclusive event

Q36 The degree of asymmetry, or departure from symmetry of a distribution is known as

deviation

kurtosis

**skewness**

mean

Q37 The third moment about the mean of the data 2,3,4,5,6 is

4.4

44

**88**

440

Q38 The range of the set of data 20,21,23,25,28,30,35,37,38,40 is

29.7

29

**20**

3

Q39 The arithmetic mean of 5,5,5,5,7,7,7,8,8,8,8,8,6,6,4,4 is

**6.31**

8

7

63.1

Q40 Sampling distribution is the ___________

**Most fundamental of inductive statistics**

most of inductive sample

inductive fundamental of population

statistical sampling population

Q41 A particular value of the population, such as the mean income or the level of formal education, is

called

**parameter**

population

sample

variable

Q42 _________ combine the features of crosssectional and timeseries data.

secondary data

**panel data**

census

cross sectional data

Q43 The two sources of data are _______ and _________

publication and paper

article and writeup

**primary and secondary**

National news paper and census

Q44 Data collected for crosssection of subjects (population under study) at a time is called _______

primary data

secondary data

time series data

**cross sectional data**

Q45 Data collected on a particular variable or set of variables over time is know as _______

primary data

secondary data

population data

**time series data**

Q46 _____ advocate that the current year quantities are taken as weights

Dorbish Bowley

Irving Fisher

**Paasche's price**

Edward

Q47 _______ advocated the geometric cross of Laspeyre’s and Paasche’s Price index numbers

Dorbish Bowley

**Irving Fisher**

Kennesian

Adam Smith

Q48 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 _____

**unweighed method**

weighted method

macro economics

sample method

Q49 reflect changes in the retail prices of different commodities. The are normally constructed for

different classes of consumers know as _____

index

price index number

value index number

**retail price index number**

Q50 reflect changes in the volume of goods produced or consumed know as ___

index

price index number

value

**quantity index number**

Q51 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 ________

card number

Index numbers

pvc number

**price index number**

Q52 _________ are indicators which reflect the relative changes in the level of certain phenomenon in any

given period

arithemmetic number

**Index numbers**

year number

pvc number

Q53 Under certainty, the decision maker simply ______ the outcome of each alternative and selects the

one that best meets his/her objective

select

**appraises**

happy

ignor

Q54 _______ looks for the attributes or qualities of the product .i.e. comparison of the best one

**critical examinations**

attribute listening

thinking

alternative chioce

Q55 ________ is the comparison of one thing with another that has similar features

**analogies**

random

sample

selection

Q56 ________is a method base on two head is better than one.

**brai storming**

management meeting

conference

broad meeting

Q57 _______ Is the logical approach, it answers questions like What, Who, Where, How, When and Why

**critical examinations**

brain storming

conference

broad meeting

Q58 ______ defined as the logical and quantitative analysis of all the factors influencing a decision

Choice

Economic defination

**Decision analysis**

Demand and Supply

Q59 ________ thinking considers end rather than means

leaders

group

**creative**

analytical

Q60 The art of problem solving and decision making is base on _________

leader and position

authority

**common sense**

power

Q61 analysis is the modern approach to decision making both in economics and in business

Demand and Supply

Trend line

Regression

**Decision**

Q62 Pearson’s No. 2 coefficient of skewness uses the difference between the ____

skewness of the distribution

Variance and mean of the distribution

mean and the mode

**mean and the median of the distribution**

Q63 A complete absence of skewness would have a coefficient of skewness equal to ________

alfa level

half

one

**zero**

Q64 leptokurtic, platykurtic and mesokurtic is otherwise known as __________distribution curve

ordinary

**normal**

frequency

arithemetic

Q65 _________ measures the degree of peakedness of a distribution. It is usually taken relative to a

normal distribution

skewness

**Kurtosis**

mesokuit

platkurtic

Q66 The moment coefficient of kurlosis is used to calculate the _____ of a distribution

**peakedness**

mesokurtic

skewness

platkurtic

Q67 Pearson’s first coefficient of skewness and Pearson’s second coefficient of skewness is called

_____________

measures of variation

measures of variance

**measures of skewness**

measures of regression analysis

Q68 ___________ 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

coefficient

variation

**coefficient of variation**

regression analysis

Q69 Consider the arrayed data, X = 2,5,8,9,12,13,18. Find mean deviation

52.19

9.57

**3.796**

641.29

Q70 _________ can be said to measure the degree of uniformity of observations in a given set of data

variance

standard deviation

range

**variation**

Q71 __________ 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

mean deviation

variance

mean

**range**

Q72 variables include sex, in religious or party affIliation, genotype, blood group, place of residence know

as _____

ratio scale

**nominal scale**

ordinal scale

interval scale

Q73 scale has all the properties of the nominal, ordinal and interval scales including the additional

property of having an absolute zero point know as _________

**ratio scale**

nominal scale

ordinal scale

interval scale

Q74 _________ 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.

Quantitative Variable

**Statistics**

Mathematics

Business

Q75 Government uses _________ as a tool for collecting data on economic aggregates such as national

income, savings, consumption and gross national product

Sample

Population

**statistics**

agent

Q76 ______________ is a variable whose values are given as numerical quantities

**Quantitative Variable**

Qualitative Variable

Random Variable

Continuous Variable

Q77 In studying the nutritional well being of pupils in a primary school, the _______ is a pupil in the

school.

**entity**

Population

sample

variable

Q78 _____________ is a characteristic that assumes different values for different entities

**Variable**

Population

Random Variable

Sample Variable

Q79 ____________ is the part of the population that is selected for a study

**Sample**

Continuous

Random

Qualitative

Q80 __________variable that can assume both decimal and non decimal values

**Continuous**

Population

Random

Discrete

These ans doesn't correspond with any of the TMAs. Please check and assist us. Thanks.

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