The responses of a sample of 1000 adults who were Type of lenses asked what type

Question

The responses of a sample of 1000 adults who were Type of lenses asked what type of corrective lenses they wore are Contacts shown in the table at the right. Find the mean, median, Eyeglasses and mode of the data, if possible. If any measure cannot Contacts and be found, explain why. Frequency 160 120 690 30 eyeglasses None Find the mean. Select the correct choice below and, if necessary, ill in the answer box to complete you choice. O A. The mean is Type an integer or decimal rounded to one decimal place as needed) B. The mean cannot be calculated because the data are at the nominal level of measurement ° C. The mean cannot be calculated because the sample size is too small 0 D. The mean cannot be calculated because there is an even number of data values. Does the mean represent the center of the data? A. The mean represents the center O B. The mean does not represent the center because it is not a data value ° C. The mean does not represent the center because it is the largest data value. 0 D. The mean does not represent the center because it is the smallest data value. 0 E. The data set does not have a mean act vour answer

Explanation / Answer

MEAN:

Here the data set is of Nominal type. So for a Nomial data set only mode can be found.

So "The mean cannot be calculated because the data are at the nomial level of measurement"(Answer)

and for the next part question "Does the mean represent the centre of the data?"

the answer is "the data set doesnot have a mean"

MEDIAN:

Here the data set is of Nominal type. So for a Nomial data set only mode can be found.

So "The median cannot be calculated because the data are at the nomial level of measurement"(Answer)

and for the next part question "Does the median represent the centre of the data?"

the answer is "the data set doesnot have a median"

MODE:

The correct mode is "Contact and eye glasses" because in the given table this has maximum frequency.(Answer)

And to answer "Does mode represent a typical or central data entry?"

Yes,the mode represent a typical data entry.(Answer)

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