# Introduction to Statistics

## Trending Questions

**Q.**

What are the few steps of sampling procedures?

**Q.**

What do you understand by the word statistics in (i) singular form, (ii) plural forms

**Q.**

Difference between census method and sampling method.

**Q.**

Define statistics as a subject.

**Q.**Statistics is a branch of mathematics that deals with the collection, organization, presentation, analysis and interpretation of data.

- True
- False

**Q.**

Define some fundamental characteristics of stastistics.

**Q.**Find the median of the given values:

26, 56, 32, 33, 60, 34, 17, 29, 45, 63

- 33
- 33.5
- 39.5
- 47

**Q.**

In a moderately asymmetrical distribution, if the mean and median are $36$ and $34$ respectively, then find out the value of empirical mode.

$30$

$32$

$42$

$22$

**Q.**

_____ refers to careful study of each job to determine tasks and responsibilities involved in a job.

**Q.**

When the data is collected by an investigator himself/herself, such data is called as primary data.

- True
- False

**Q.**

Arrange the given data in ungrouped frequency table : 10 , 20 , 30 , 10 , 50 , 40 , 30 , 90 , 20 , 30 , 10 , 30 , 40 , 90 , 100 , 20 , 30 , 20 , 10 , 10

**Q.**

Faster feedback can be received by - GK Q&A

**Q.**What do you understand by the word ''statistics'' in

(i) singular form (ii) plural form?

**Q.**

The raw data is also called secondary data.

- True
- False

**Q.**After doing Statistical analysis a Statistician concludes that the average height of a 9th-grade student is 4 feet 7 inches. This is an example of_____.

- Statistical conclusion
- non-Statistics
- probability
- spread

**Q.**How to find the height of a bar in histogram if the width of bar is not same

**Q.**Measures of central tendency represents:

- Averages
- Mean, median and mode
- None of the above
- Central value

**Q.**

This analysis would enable an assessment of the number and types of human resources necessary for the performance of various jobs and the accomplishment of organisational objectives.

Workforce analysis

Workload analysis

All of the above

Break-even analysis

**Q.**The probability of getting a prime number when a die is rolled is

- 52
- 12
- 23

**Q.**

Classify the data in Q1 above as primary or secondary data.

**Q.**For the collection of numbers 12, 15, 8, 13, 12, 15, 9, 16, 24, 20, 20, 16 and 10, answer the following:

(i) What is the cumulative frequency of 16?

(ii) If 15 - 20 be an overlapping class interval when the numbers are grouped, find the cumulative frequency of the class interval.

(iii) If 15 - 20 be a nonoverlapping class interval when the numbers are grouped, find the cumulative frequency of the class interval.

**Q.**The number of students who have played various sports is shown in the table below.

Sport | Cricket | Tennis | Chess | Football |

No. of Students | 5 | 10 | 20 | 15 |

Which of the following is the right bar graph to represent the data above?

**Q.**Data that has not been processed for use is known as _______

- secondary data
- primary data
- raw data
- organised data

**Q.**

The aggregate of data is called? (a) statistics (b) editing of data (c)analysis of data (d) collection of data

**Q.**What are (i) primary data? (ii) secondary data? Which of the two − the primary or the secondary data − is more reliable and why?

**Q.**

- Primary data
- Secondary data
- Raw data

**Q.**

What are (i) primary data? (ii) secondary data? Which of the two - the primary or the secondary data - is more reliable and why?

**Q.**

The range of the data is always from the data.

- True
- False

**Q.**Frequency of a variable is always:

- A fraction
- An integer
- In percentage
- A complex number

**Q.**

Data collected by the investigator himself is called as

Raw data

Primary data

Secondary data

Original data