1.
What skills required in Data Science?
A.
Statistics / Mathematics skills
B.
C.
Domain Knowledge / Business Knowledge
D.
2.
Which of the following best describes the principal goal of data science?
A.
To collect and archive exhaustive data sets from various source systems for corporate record keeping uses.
B.
To mine and analyze large amounts of data to uncover information that can be leveraged for operational improvements and business gains.
C.
To prepare data for analysts to use as part of analytics applications.
D.
3.
Which of the following is performed by a data scientist?
4.
Which of the following is the most widely used language for data science?
5.
Which of the following is not a step in data analysis?
6.
Which of the following step is performed by data scientist after acquiring the data?
7.
What is the simplest class of analytics?
8.
Point out the correct statement:
A.
Raw data is original source of data
B.
Preprocessed data is original source of data
C.
Raw data is the data obtained after processing steps
D.
9.
The below image is an example of:
10.
The below image is an example of
11.
Which is the most suitable chart for discrete data?
12.
Which is the most suitable chart for continuous data?
13.
What is the Excel feature that quickly allows us to show trend information in a single cell?
14.
How can you easily perform a summary over a large detailed data set?
15.
Which Excel feature can you use to ensure that users do not enter irrelevant data?
16.
Which of the following is the correct formula to add the values in cell A1 to A3?
17.
In what follows, S is the sample space of the experiment in question and E is the event of interest. n(S) is the number of elements in the sample space S and n(E) is the number of elements in the event E.
A die is rolled, find the probability that an even number is obtained.
18.
Two coins are tossed, find the probability that two heads are obtained.
Note: Each coin has two possible outcomes H (heads) and T (Tails).
19.
Which of these numbers cannot be a probability?
20.
What is the probability of the shaded sector from the spinner below?
21.
A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is white?
22.
The blood groups of 200 people are distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?
23.
A die is rolled, find the probability that the number obtained is greater than 4.
24.
The sample space S of the experiment in question 8 is shown below:
A card is drawn at random from a deck of cards. Find the probability of getting a queen.
25.
The expected value or _______ of a random variable is the center of its distribution.