NOUN TMA Questions & Answers: AEA501 - Statistics for Social Sciences

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NOUN TMA Questions & Answers: AEA501 - Statistics for Social Sciences

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Q21 Spearman􀳦??s rank correlation is also referred to as

coefficient of rank correlation

Q22 If r = between 0.81-0.99, implies􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..

high correlation

Q23 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦...a measure of the degree of association between dependent and independent variables

correlation

Q24 There are basically two methods involved in chi square testing: Test of goodness of fit and􀳦?􀳦􀳦?

test of independence

Q25 A Chi square is a 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦􀳦?􀳦 statistic

non-parametric

Q26 In F distribution, the formula K(n-1), where K stands for􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

number of samples

Q27 F ratio is the ratio of the variation between sample means and the􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

variation within the samples

Q28 F distribution is used to test differences between􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦. Or more means

three

Q29 In statistics, ANOVA means􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..

analysis of variables

Q30 Z distribution is applied when sample size is greater than􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

30

Q31 In statistics, if t calculated value is less than the critical value􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..is accepted

null hypothesis

Q32 There are􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦.. basic steps involved in hypothesis testing

seven

Q33 When a hypothesis is correct and we reject it, we say that􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

type l error

Q34 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.are
assumptions or guesses or statement about the probability distribution of population

statistical hypothesis

Q35 A statement of the precision or accuracy of an estimate is often called its􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

reliability

Q36 There are two methods of estimation: Point estimate and􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

interval estimate

Q37 A normal probability distribution is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

bell-shaped

Q38 Normal distribution, also known as normal curve is also known as􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

Gaussian distribution

Q39 The probability of getting exactly two heads in six tosses of a fair coin is 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

0.234

Q40 What is the probability of getting at least five heads in 6 tosses of a fair coin?

0.094

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Q1 Test of independence involve the use of

contingency table

Q2 The statistical relationship between two variables can be estimated by considering􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

three factors

Q3 Slope of a regression line regression coefficient is also called􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

regression coefficient

Q4 In how many ways can a committee of 6 men be chosen from a committee of 10 men if position is disregarded?

210

Q5 In permutation, in how many ways can five people be seated if two seats are available?

20 ways

Q6 If a die is tossed without bias, what is the Probability of 2 showing up?

1\6

Q7 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦􀳦?􀳦.is a method that ensure all the elements in a sample have equal chance of being selected.

lottery method

Q8 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦...is a relative measure of dispersion expressed as percentage.

coefficient of variation

Q9 From this ungrouped data: 17, 24, 24, 24, 25, 25, 27, 28, 28,30, 31, 32, 34, 34, 36, 36, 40, 40, 43, 44, the
mean is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..

31.1

Q10 The set of numbers; 24, 34, 31, 24, 24, 30, 17, 32, 28, 36, 40, 45, the set of 12 observations can be arranged in an array as:

17,24,24,24,28,30,31,32,34,36,40 and 45

Q11 A motorcyclist travels 150km each day for five days at speeds 20,30,40,50 and 60km/h respectively, his average speed using harmonic mean is􀳦?􀳦􀳦?􀳦..

34.48km/h

Q12 The geometric mean of 2, 4, 8 and 64 is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦

8

Q13 The antilog of 0.894 is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

7.834

Q14 A histogram consists of rectangles and􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

vertical bars

Q15 For example, in the class interval of 17,18,19,20,21,22 and 23, 17 is the lower class limit while􀳦? 􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.is the upper class limit

23

Q16 The age of an individual in a statistic is called a score or􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

observation

Q17 R square in regression anlaysis measures the degree of variability in Y that is explained by􀳦?􀳦􀳦? 􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..in the model

X

Q18 An example of dependent variable is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

income

Q19 In regression analysis, for a scattered diagram, dependent variable is usually located on the􀳦?􀳦􀳦?

vertical axis

Q20 In regression equation, Y= a+bX, the X stands for􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

independent variable

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Q41 In how many ways can five people be seated if only three seats are available?

60

Q42 In how many ways can six students be seated if 6 seats are available?

720

Q43 when two or more events are statistically dependent, the occurrence of one affects the occurrence of the other, this is called􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.

dependent events

Q44 Example, if there are 50 male and 40 female in a class, if a person is picked, the probability of peaking a male is equal􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..

50/90

Q45 The word Probability refers to chance or􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

Livelihood

Q46 Example of non-probability sampling are; systematic sampling, multistage sampling, cluster or area sampling and􀳦?􀳦􀳦?􀳦􀳦

purposive sampling

Q47 In the use of 'table of random numbers' if the number of elements is less than 100, the numbering is between􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.

01--99

Q48 There are two types of sampling; random sampling and􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

non random sampling

Q49 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦...is a subset of a population
which is usually taken from a population using an appropriate technique

sample

Q50 The term population or universe is used to mean the totality of cases in a place

FALSE

Q51 The variance of a set of data is defined as the square of the

standard deviation

Q52 There are􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦steps in calculating standard deviation

six

Q53 The range of a set; 2, 3, 5, 6, 8, 12, 18 and 25 is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

23

Q54 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.is the difference between the largest and smallest number and observation in a set of data.

range

Q55 The harmonic mean of the numbers 4, 8 and 10 is􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

6.316

Q56 In the formula of Harmonic Mean, symbol n means􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

number of observation

Q57 The geometric mean of the fractions 2/3, 2/5 and 3/5 is

0.54

Q58 The geometric mean is always less than the arithmetic mean.

TRUE

Q59 The geometric mean of n positive values is defined as the􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦? 􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.of the product of the values.

nth root

Q60 A pie chart is a circular diagram with the circumference of􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

360 degree

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Q61 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦...is
a line graph joining the mid-point of the class interval

frequency polygon

Q62 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.􀳦?􀳦􀳦?􀳦. Is the
number of observations in that class plus all the observation above it.

cumulative frequency

Q63 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..is the mid-point of the class interval
obtained by adding up the lower and the upper limits of each class and dividing by 2

class mark

Q64 A tabular representation of data by classes including the corresponding frequencies is referred to as

frequency distribution

Q65 The mode of the figures in question 13 above is 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.

24

Q66 The median of the figures in question 13 above is 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.

30.5

Q67 The mean of the figures in question 13 above is 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.

31.1

Q68 These figures (17, 24, 24, 24, 25, 25, 27, 28, 28, 30, 31, 32, 34, 34, 36, 36, 40, 40, 43 and 44) are examples of 􀳦?􀳦􀳦?

ungrouped data

Q69 There are two classification of data; quantitative and􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

qualitative

Q70 Data can be collected from respondents through the use of structured questionnaire, group discussion, phone or through􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..

email

Q71 A collection of piece of data pertaining to a topic is called􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

variable

Q72 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦____________?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦...􀳦?􀳦􀳦?􀳦􀳦?􀳦.are unprocessed bits of information about some topic or event

raw data

Q73 Statistics is applicable to various fields such as economics, agricultural and biological sciences

TRUE

Q74 Statistical data are highly useful in the understanding􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦... and economic problems.

economic policy

Q75 Statistical analyses in the form of histogram, bar chart, or 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦? 􀳦.makes it easier to understand

pie chart

Q76 Examples of inferential statistic are probability distributions, and 􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦? 􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.analysis

correlation and regression

Q77 Inferential statistics is sometimes called􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?
􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦..statistics

analytical

Q78 Examples of descriptive statistics are mean,median, mode and

Percentage

Q79 Major steps in statistical analysis are􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?

four

Q80 There are two major classifications of statistics: descriptive and􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦? 􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦􀳦?􀳦.statistics

inferential

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