Random Sampling with Number Tables

The video tutorial explains how to generate a simple random sample using a random number table. It highlights the advantages of using this method for consistency in educational settings, despite its tedious nature. The process involves selecting numbers from a table, ensuring they fall within a specified range, and ignoring those that do not. The tutorial also discusses the challenges of this method, such as skipping many values, and concludes with a practical example of selecting a sample of students.

What is the main purpose of this video?

• To teach how to use a calculator for random sampling

• To demonstrate generating a random sample using a random number table

• To explain the history of random number tables

• To discuss the disadvantages of random sampling

Why are random number tables not commonly used today?

• They are too expensive

• They are tedious and time-consuming

• They are not accurate

• They are difficult to understand

What is the total number of students from which a sample is to be selected?

• 800

• 500

• 638

• 700

How many students need to be selected for the sample?

• 10

• 8

• 5

• 12

What should you do with numbers greater than 638 when using the table?

• Include them in the sample

• Ignore them

• Subtract 100 from them

• Add them to the next number

How many digits should you look at a time when using the random number table?

• Four

• One

• Two

• Three

Where did the demonstration start on the random number table?

• Row three, column two

• Row four, column four

• Row two, column three

• Row one, column one

What was the first number considered in the demonstration?

• 494

• 715

• 326

• 104

What should you do if a number is larger than 638?

• Add it to the next number

• Subtract 100 from it

• Include it in the sample

• Ignore it and move to the next number

Which number was the first valid selection in the demonstration?

• 986

• 673

• 494

• 715