MATH6200 Data Analysis (Midterm)

This course reviews and expands upon core topics in probability and statistics through the study and practice of data analysis.

MATH6200 Data Analysis

Question 1

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The quantification of data into information.

Select one:

a.

analytics 

b.

dataology

c.

datafication

d.

mining

Question 2

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As of 2014,there are _______million of tweets a day.

Select one:

a.

300

b.

500

c.

200 

d.

400

Question 3

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What range of values lie between 3 standard deviations above and below the mean if the mean is 80 and the standard deviation is 3?

Select one:

a.

71-89

b.

72-89

c.

70-89

d.

71-88

Question 4

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The score NOT easily affected by extreme values.

Select one:

a.

mode

b.

mean

c.

Median

d.

range

Question 5

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The major outcome of correlation.

Select one:

a.

interpretation

b.

critical thinking

c.

prediction

d.

analysis

Question 6

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The following are elements in an analytic plan EXCEPT

Select one:

a.

decision support tools

b.

graphs 

c.

analytic models 

d.

interlinked data output 

Question 7

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Data is NOT information unless we add_________.

Select one:

a.

volume

b.

depth

c.

analytics

d.

velocity

Question 8

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He is someone who asks interesting questions on formal and informal theory.

Select one:

a.

data analyst

b.

data drive

c.

data expert

d.

data scientist

Question 9

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Which is NOT a value of r ?

Select one:

a.

0.98

b.

-0.05

c.

1.02

d.

0.03

Question 10

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The number that occurs most frequently is called________.

Select one:

a.

mean

b.

Mode

c.

range

d.

media

Question 11

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The creation of a data product contains 3 components  EXCEPT

Select one:

a.

process 

b.

technical expertise 

c.

data   

d.

tim

Question 12

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What percent of data will lie within 2 standard deviation of the mean?

Select one:

a.

95

b.

90

c.

99

d.

68

Question 13

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He coined the term  "data scientist"

Select one:

a.

N.R. Drops

b.

DJ Patil

c.

G.Cantor

d.

J Pastor

Question 14

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A survey of 100 consumers said that the price charged for a kilo of rice could be approximated by a normal distribution with a mean of 35 and a standard deviation of 4.How many of them lie between 27 and 43?

Select one:

a.

95

b.

88

c.

92

d.

90

Question 15

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A  vegetable distributor  knows that during the month of August ,the weights of tomatoes are normally distributed with a mean of 0.61 lb  and a standard deviation of 0.15 lb. What percent of the tomatoes weigh less than 0.71 lb?

Select one:

a.

95

b.

84

c.

97

d.

85

Question 16

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In the equation of the regression line represented by Y= 1.24 X + 6.9 if X=2 then Y =?

Select one:

a.

9.38

b.

9.30

c.

9.02

d.

9.21

Question 17

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A score of 50 lies 2 standard deviations above a mean of 30.What is the value of the standard deviation?

Select one:

a.

25

b.

20

c.

15

d.

10

Question 18

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Data involving two variables.

Select one:

a.

divariate

b.

bivariate

c.

binary

d.

bichotomous

Question 19

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Example of a data product.

Select one:

a.

google games

b.

google search

c.

google drive

d.

google map

Question 20

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A negative correlation exists when___________.

Select one:

a.

x decreases y decreases

b.

x increases y decreases

c.

x increases y increases

d.

x and y remains constant

Question 21

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The middle-most value in a ranked list of numbers.

Select one:

a.

median

b.

mode

c.

mean

d.

percentile

Question 22

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A  vegetable distributor  knows that during the month of August ,the weights of tomatoes are normally distributed with a mean of 0.61 lb  and a standard deviation of 0.15 lb. How many can be expected to weigh more than 0.31 lb in a shipment of 6000 tomatoes.

Select one:

a.

100

b.

120

c.

200

d.

150

Question 23

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Which of the following is used as a method for Correlation?

Select one:

a.

Chi-square

b.

Kendal tau

c.

Pearson r

d.

f-test

Question 24

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A positive z-score means that the score is

Select one:

a.

Equal to the mean

b.

Higher than the mean

c.

Lower than the mean

d.

One standard deviation higher than the mean

Question 25

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On an examination given to 1000 students, Jef’s score of 80 was higher than the score of 480 students who took the exam. What is the percentile for Jef’s score?

Select one:

a.

60th

b.

50th

c.

65th

d.

48th

Question 26

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It expands available data enormously.

Select one:

a.

sorting

b.

volume

c.

text mining 

d.

text

Question 27

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A data having the same number of occurrence in scores is said to be

Select one:

a.

unimodal

b.

bimodal

c.

no mode

d.

trimodal 

Question 28

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Which is NOT a correct correlation Coefficient?

Select one:

a.

0.56

b.

-0,43

c.

0.9

d.

1.2

Question 29

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If the standard deviation of a distribution is 3.5, the variance is

Select one:

a.

15.25

b.

12.50

c.

14.50

d.

12.25

Question 30

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It partitions a ranked data into four equal groups.

Select one:

a.

mean

b.

median

c.

quartile

d.

percentile

Question 31

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The value of X in the regression equation Y= 1.24 X + 6.9 if Y=13.1 is

Select one:

a.

5      GOOD LUCK!

b.

5        GOOD LUCK

c.

4

d.

6

Question 32

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It refers to the degree of relationship between two variables?

Select one:

a.

regression

b.

analysis

c.

synthesis

d.

Correlation

Question 33

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A bell-shaped distribution that is symmetric about a vertical line?

Select one:

a.

skewed

b.

standard

c.

symmetric

d.

normal

Question 34

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Who said that "The future is not  google-able " ?

Select one:

a.

Wiliam Harvey

b.

William Gillason

c.

Dennis Grant

d.

Roland Patil

Question 35

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The method of correlation used for ranked score is ________.

Select one:

a.

Pearson r

b.

Kendal tau

c.

Chi-square

d.

Spearman rho

Question 36

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The equation of the _______line predicts the value of Y given X.

Select one:

a.

correlation

b.

prediction

c.

Regression

d.

analytic

Question 37

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A graph that is used to indicate frequency distribution.

Select one:

a.

ogive

b.

bar graph

c.

pie graph

d.

histogram

Question 38

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It list the percent of data in a distribution.

Select one:

a.

frequency distribution

b.

percent distribution

c.

relative distribution

d.

relative frequency distribution

Question 39

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A survey of 100 consumers said that the price charged for a kilo of rice could be approximated by a normal distribution with a mean of 35 and a standard deviation of 4.How many are less than 39?

Select one:

a.

78

b.

80

c.

82

d.

84

Question 40

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The area of the standard normal curve to the right of z=0.82 is _______.

Select one:

a.

0.295

b.

.209

c.

0.294

d.

0.206

Question 41

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If there are 103 scores the median is equal to the _____ranked score.

Select one:

a.

54th

b.

51st

c.

55th

d.

52nd

Question 42

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A  vegetable distributor  knows that during the month of August ,the weights of tomatoes are normally distributed with a mean of 0.61 lb  and a standard deviation of 0.15 lb. How many can be expected to weigh between 0.31 to 0.91  in a shipment of 4500 tomatoes.

Select one:

a.

4000

b.

4215

c.

4275

d.

4100

Question 43

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The normal distribution with a mean of 0 and standard deviation of 1.

Select one:

a.

Standard

b.

skewed to the right

c.

Skewed

d.

kurtic

Question 44

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A bell-shaped distribution that is symmetric about a vertical line.

Select one:

a.

standard

b.

kurtic

c.

skewed

d.

normal

Question 45

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The difference between the highest and lowest value.

Select one:

a.

mean

b.

deviation

c.

variance

d.

range

Question 46

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A perfect positive correlation coefficient is equal to

Select one:

a.

2

b.

0

c.

1

d.

-1

Question 47

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What increases data volume?

Select one:

a.

vastness

b.

velocity

c.

viscosity

d.

variety

Question 48

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According to Hilary Mason which is NOT a skill that a good data scientist must cultivate.

Select one:

a.

math and stat

b.

critical thinking 

c.

coding

d.

communication

Question 49

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What is the value of the mean if a score of 110 is 3 standard deviation above the mean?

Select one:

a.

85

b.

95

c.

90

d.

90

Question 50

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Which of the following is TRUE when a distribution is normal?

Select one:

a.

Mean > Median >Mode

b.

Mean >Mode >Median

c.

Mean

d.

Median

e.

Mode

f.

Mean < Median