A market survey was conducted to study the effectiveness of a new feature in a smart phone. For this purpose, a sample of 1000 people was chosen. However, only 947 people actually attended the survey. This is a type of ___.

Sampling bias

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Non-response error

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Error in data acquisition

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Sampling error

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Solution

The correct option is B Non-response error
Non-response error occurs when sampling units selected for a sample are not interviewed. The non-response may be due to unwillingness or unavailability. It is a non-sampling error.

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(ii) Which type of music is liked by the maximum number of people?

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A market survey was conducted to study the effectiveness of a new feature in a smart phone. For this purpose, a sample of 1000 people was chosen. However, only 947 people actually attended the survey. This is a type of ___.

The correct option is B Non-response errorNon-response error occurs when sampling units selected for a sample are not interviewed. The non-response may be due to unwillingness or unavailability. It is a non-sampling error.

The correct option is B Non-response error
Non-response error occurs when sampling units selected for a sample are not interviewed. The non-response may be due to unwillingness or unavailability. It is a non-sampling error.