Question 1

Which of the following best describes the relationship between a population and a sample, as illustrated in the provided image?

Accepted Answer

A sample is a subset of the population, selected to represent the entire group.

Question 2

In the context of the Starbucks price perception study, which of the following is the correct definition of a 'parameter'?

Accepted Answer

The true proportion of all Starbucks Türkiye customers who think Starbucks is reasonably priced.

Question 3

Which of the following is an example of discrete numerical data?

Accepted Answer

Shoe size

Question 4

Which statistical method would you use to estimate the proportion of customers who believe Starbucks is reasonably priced, based on a sample?

Accepted Answer

Inferential statistics

Question 5

What is the main purpose of random sampling in statistics?

Accepted Answer

To obtain a representative sample from the population.

Question 6

Which of the following is NOT a typical output of descriptive statistics?

Accepted Answer

Confidence intervals

Question 7

A researcher wants to study the effect of a new drug. She divides participants into a treatment group and a control group. What type of data collection method is this?

Accepted Answer

Designed experiment

Question 8

Which of the following best describes a 'statistic'?

Accepted Answer

A numerical summary calculated from a sample.

Question 9

If you want to summarize the exam scores of a class using mean, median, and range, which branch of statistics are you using?

Accepted Answer

Descriptive statistics

Question 10

Which of the following is an example of continuous numerical data?

Accepted Answer

Height

Question 11

A simple random sample of $$n$$ units is defined as:

Accepted Answer

A sample selected so that every different sample of size $$n$$ has an equal chance of selection.

Question 12

Which of the following is a categorical (qualitative) variable?

Accepted Answer

Hair color

Question 13

In the Starbucks price perception study, what is the 'variable of interest'?

Accepted Answer

Response to 'Do you think Starbucks is reasonably priced?' (Yes/No)

Question 14

Which of the following is NOT a method for collecting data?

Accepted Answer

Inferential statistics

Question 15

Which software is commonly used for introductory statistics courses, as mentioned in the study materials?

Accepted Answer

Excel

Question 16

Which of the following is a real-world application of statistics?

Accepted Answer

Analyzing clinical trial data in medicine

Question 17

Which of the following is a key reason for learning statistics, according to the study materials?

Accepted Answer

To analyze news and data critically

Question 18

Which of the following is a typical tool used in inferential statistics?

Accepted Answer

Hypothesis testing

Question 19

In statistics, what is the difference between a parameter and a statistic?

Accepted Answer

A parameter describes a population, while a statistic describes a sample.

Question 20

Which of the following best describes the purpose of descriptive statistics?

Accepted Answer

To summarize and present data in a convenient form.

Introduction to Statistics: Data, Sampling, and Statistical Thinking

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