Page 178 - Data Science class 10
P. 178
4. Standard deviation of the sampling distribution of a statistic is called ____________________.
a. standard error b. error
c. bias d. difference
5. A ____________________ error occurs when the researcher does not understand who they should survey.
c. selection error d. population-specific .
c. sample frame error d. non-response error
6. To predict how likely or unlikely a particular event is, we use ____________________.
a. outcomes b. parameters
c. facts d. probability
7. ____________________ is an additional way to minimise the occurrence of sampling errors.
a. Stratified sampling b. Random sampling
c. Both a and b d. None of these
8. What is the approximate value of the Z score?
a. 1.96 b. 0.55
c. 1.096 d. 0.196
9. ____________________ writing expresses opinions and feelings rather than facts.
a. Objective b. Comprihensive
c. Subjective d. Both a and b
10. ____________________ is tendency to favour unfairly.
a. Prejudice b. Partiality
c. Bias d. All of these
11. Skin colour is a ____________________ type of prejudice.
a. religious b. nationality
c. gender d. racial
12. Perception that has a direct and literal impact during the analysis of data is known as ____________________.
a. confirmation bias b. opinion
c. evidence d. None of these
13. Any measure of the population is called ____________________.
a. parameter b. statistics
c. statistic d. error
14. Random samples of size 36 are taken from an infinite population whose mean is 80 and standard deviation is 18. The
mean and standard error of the sampling distribution of sample means are, respectively,
a. 80 and 18 b. 80 and 2
c. 80 and 3 d. 13.33 and 0.5
B. Fill in the blanks.
1. ____________________ is the characteristic of population and ____________________ is the characteristic of a sample.
2. In sampling error formula ____________________ show the size of the sample.
3. ____________________ is an additional way to minimise the occurrence of sampling errors.
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