StatTutor Lesson - Simple Random Samples

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      Questions 1-2

      68

      Question 1.

      What is unique about a simple random sample?

      		A.
      		B.
      		C.
      		D.
      Incorrect. A simple random sample is defined as a sample where every possible sample of size n has the same chance of being selected.
      Correct. A simple random sample is defined as a sample where every possible sample of size n has the same chance of being selected.
      Incorrect. Try again.
      2

      Question 3

      89

      Question 3.

      Which of the following is NOT a proper method of selecting a simple random sampling?

      		A.
      		B.
      		C.
      		D.
      Incorrect. Selecting the top 50 names does not involve using a random device.
      Correct. Selecting the top 50 names does not involve using a random device.
      Incorrect. Try again.
      2

      Questions 4-7

      135

      Question 4.

      What digits are listed in a random digit table?

      		A.
      		B.
      		C.
      		D.
      Incorrect. A fact about a random digit table is that it consists of the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 in random order.
      Correct. A fact about a random digit table is that it consists of the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 in random order.
      Incorrect. Try again.
      2

      Questions 8-11

      236

      Question 8.

      If individuals in a population are numbered from 1 to 50, how many digits should you select each time from the random digit table?

      		A.
      		B.
      		C.
      Incorrect. Since 50 is a two digit number, you should select two digits each time.
      Correct. Since 50 is a two digit number, you should select two digits each time.
      Incorrect. Try again.
      2