Collection of Data

Why is accurate data collection important in statistics?

1. It increases printing costs.
2. It ensures reliable analysis and valid conclusions.
3. It reduces the number of respondents automatically.
4. It eliminates the need for statistical methods.

Which factor should be checked before using secondary data?

1. Colour of the publication
2. Reliability, relevance, and timeliness of the data
3. Number of pages in the report
4. Printing style

Which of the following is a disadvantage of primary data?

1. It is highly relevant to the study.
2. It is original in nature.
3. It is expensive and time-consuming to collect.
4. It is collected directly by the investigator.

A sample should be:

1. Larger than the population
2. Representative of the population
3. Selected without any planning
4. Chosen only from urban areas

Observation as a method of data collection involves:

1. Guessing information
2. Watching and recording events or behaviour carefully
3. Reading newspapers only
4. Using only published reports

The main advantage of the sampling method is:

1. It is always more accurate than a census.
2. It saves time and cost.
3. It studies every individual.
4. It eliminates all errors completely.

Which source provides secondary data?

1. Personal interview
2. Direct observation
3. Government publications
4. Experiment

Which of the following is an important quality of good data?

1. Bias
2. Inaccuracy
3. Reliability
4. Irrelevance

A questionnaire is:

1. A list of statistical formulas
2. A set of written questions used to collect information from respondents
3. A government report
4. A newspaper article

Which of the following is an example of a primary data collection method?

1. Reading a government report
2. Conducting a personal interview
3. Using census publications
4. Referring to a research journal

In the sampling method, data are collected from:

1. Every individual in the population
2. Only government officials
3. A representative part of the population
4. Foreign countries only

Which method collects information from every unit of the population?

1. Sampling method
2. Random method
3. Census method
4. Observation method

Data that have already been collected by someone else are called:

1. Primary data
2. Secondary data
3. Raw data
4. Sample data

Data collected by the investigator for the first time is known as:

1. Secondary data
2. Census data
3. Primary data
4. Published data

What is the first step in the process of statistical investigation?

1. Tabulation of data
2. Collection of data
3. Analysis of data
4. Interpretation of data