Data Collection and Analysis for Business: Quizzes and Practice Tests

Question 1

Which of the following is not a method of data collection?

Accepted Answer

Web searches

Answer

Surveys

Answer

Experiments

Answer

Interviews

Question 2

For ordinal data, the appropriate measure of central tendency is the:

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 3

To obtain an unbiased estimate of the average age of employees, which sampling method should be employed?

Accepted Answer

Random sampling

Answer

Convenience sampling

Answer

Snowball sampling

Answer

Quota sampling

Question 4

What distinguishes a population from a sample?

Accepted Answer

A sample is a subset of the population.

Answer

A population is smaller than a sample.

Answer

A sample is always representative of the population.

Answer

There is no difference between a population and a sample.

Question 5

Which of the following is NOT a primary method of data collection?

Accepted Answer

Data mining

Answer

Surveys

Answer

Interviews

Answer

Experiments

Question 6

Which of the following is NOT a measure of central tendency?

Accepted Answer

Range

Answer

Mean

Answer

Median

Answer

Mode

Question 7

Which of the following is NOT a data collection method that involves actively gathering information from participants?

Accepted Answer

Observations

Answer

Interviews

Answer

Surveys

Answer

Experiments

Question 8

What is the measure of central tendency that represents the average value of a set of data?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 9

In an experiment, what is the primary purpose of a hypothesis?

Accepted Answer

To provide a specific prediction about the expected outcome

Answer

To prove a theory

Answer

To control for extraneous variables

Answer

To gather data

Question 10

Which sampling method involves randomly selecting a representative subset from the entire population?

Accepted Answer

Simple random sampling

Answer

Systematic sampling

Answer

Stratified sampling

Answer

Quota sampling

Question 11

What is the key distinction between a bar chart and a histogram in data visualization?

Accepted Answer

Bar charts depict categorical data, whereas histograms represent numerical data distributed over continuous intervals

Answer

Histograms depict categorical data, whereas bar charts represent numerical data distributed over continuous intervals

Answer

Bar charts show individual data points, while histograms show the frequency distribution of data

Answer

Histograms show individual data points, while bar charts show the frequency distribution of data

Question 12

What is the appropriate measure of central tendency for data that can only be categorized into groups, such as customer satisfaction ratings?

Accepted Answer

Mode

Answer

Mean

Answer

Median

Answer

Standard deviation

Question 13

What is the primary purpose of formulating a null hypothesis in an experiment?

Accepted Answer

To establish a baseline for comparison

Answer

To state the predicted outcome

Answer

To disprove the alternative hypothesis

Answer

To collect data

Question 14

What is the primary use of a scatter plot in data analysis?

Accepted Answer

To identify relationships and trends between two variables

Answer

To calculate the mean and median of a dataset

Answer

To visualize the distribution of a variable

Answer

To test for statistical significance

Question 15

Which of the following is NOT a technique used in data cleaning?

Accepted Answer

Data visualization

Answer

Data imputation

Answer

Data normalization

Answer

Data transformation

Question 16

Which of these is a measure of how spread out data is, rather than where the center of the data is?

Accepted Answer

Standard deviation

Answer

Mean

Answer

Mode

Answer

Median

Question 17

Which of the following is NOT a method of data collection?

Accepted Answer

Hypothesis testing

Answer

Observation

Answer

Survey

Answer

Experiment

Question 18

What is the primary purpose of sampling in data collection?

Accepted Answer

To obtain a representative subset of the population

Answer

To provide an exact measurement of the population

Answer

To test hypotheses

Answer

To generalize findings to a broader group

Question 19

Which formula calculates the variance of a data set?

Accepted Answer

Σ(x - μ)² / (n - 1)

Answer

Σx² / n

Answer

μ - x

Answer

n - μ

Question 20

Which of the following is an example of qualitative data?

Accepted Answer

Customer feedback comments

Answer

Production volume

Answer

Sales figures

Answer

Product sales data

Question 21

What is the primary function of a hypothesis in an experiment?

Accepted Answer

To make a prediction about the outcome

Answer

To prove a theory

Answer

To analyze the results

Answer

To collect data

Question 22

How can you best differentiate between a population and a sample?

Accepted Answer

A population is the entire group of interest, while a sample is a subset of the population.

Answer

A population is smaller than a sample.

Answer

A sample is more representative than a population.

Question 23

What is the primary purpose of a research design?

Accepted Answer

To provide a structured plan for conducting the research

Answer

To analyze the results

Answer

To collect data