Question

b. Identify the data collection method. Are there any potential biases in the method used? Identify the data collection method. Choose the correct answer below. A. The data collection method used was a survey. A random-digit telephone dialing procedure was used to collect the sample. B. The data are from a published source. The researchers randomly selected data by using the telephone numbers in the source. C. The data were collected observationally. The researchers asked for the participant's phone number after making their observation. D. The data are from a designed experiment. A random-digit telephone dialing procedure was used to collect the sample.

          b. Identify the data collection method. Are there any potential biases in the method used?
Identify the data collection method. Choose the correct answer below.
A.
The data collection method used was a survey. A random-digit telephone dialing procedure was used to collect the sample.
B.
The data are from a published source. The researchers randomly selected data by using the telephone numbers in the source. 
C.
The data were collected observationally. The researchers asked for the participant's phone number after making their observation.
D.
The data are from a designed experiment. A random-digit telephone dialing procedure was used to collect the sample.

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