Page 174 - Data Science class 10
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Solved Exercise
Objective Type Questions (Section A)
A. Tick ( ) the correct option.
1. What is the Data Science term which is used to describe partiality, preference, and prejudice? [CBSE Handbook]
a. Bias b. Favouritism
c. Influence d. Unfairness
2. In examining the invoices issued by a company, an auditor finds that the dollar amounts of invoices have a mean of
$1,732 and a standard deviation of $298. What is the probability that for a sample of 45 invoices, the average invoice is
greater than $1,800?
a. 0.563
b. 0.063
c. 0.437
d. cannot be determined without the population mean
3. The time it takes to complete the assembly of an electronic component is normally distributed with a standard deviation
of 4.5 minutes. If we randomly select 20 components, what is the probability that the standard deviation for the time of
assembly of these units is less than 3.0 minutes?
a. <0.05 b. <0.005
c. <0.025 d. <0.01
4. If you roll a pair of dice, what is the probability that (at least) one of the dice is a 4 or the sum of the dice is 7?
a. 4 b. 13
36 36
c. 21 d. 15
36 36
5. To verify the facts that have been made up by the writer, is:
a. to check the reference that are quoted actually exits.
b. to find any one source of opposition.
c. is writing the text without keeping in mind the audience.
d. None of these
6. Which of the following is not a type of prejudice?
a. Racism b. Homophobia
c. Xenophobia d. Psychology
7. A type of bias caused by choosing non-random data for statistical analysis is known as ____________.
a. Confirmation bias b. Selection bias
c. Survivor bias d. Availability bias
172 Touchpad Data Science-X

