Please provide answers to the following multiple choice questions next to the qu

Question

Please provide answers to the following multiple choice questions next to the question. Provide the letter of the correct answer.

1) Medical diagnosis is what type of variable:

a) numerical

b) categorical

c) ordinal

2) White blood cell count is what type of variable:

a) numerical

b) categorical

3) True or False: Data shown in a histogram represents frequencies.

a) True

b) False 4) Use the following information to calculate percents for letters a & b in the table below. Round to one decimal place.

all patients (n= 173) All patients (%) History of Stroke 87 a. calculate % history of stroke for all patients History of Type 2 diabetes 91 b. Calculate % history of type 2 diabetes for all patients

Explanation / Answer

Solution:-

1) (B)

2) (A)

3) (A)

4) a. 50.3%

   b. 52.6%

The values of a numerical variable are numbers. They can be further classified into discrete and continuous variables.

In statistics, a categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group or nominal category on the basis of some qualitative property.

An ordinal variable is a categorical variable for which the possible values are ordered. Ordinal variables can be considered “in between” categorical and quantitative variables. Example: Educational level might be categorized as ordinal variable.

1) Medical diagnosis is what type of variable:

a) numerical

b) categorical

c) ordinal

2) White blood cell count is what type of variable:

a) numerical

b) categorical

3) True or False: Data shown in a histogram represents frequencies.

a) True

b) False   

4)  Use the following information to calculate percents for letters a & b in the table below. Round to one decimal place.

a). Calculate % history of stroke for all patients = 87/173 * 100 = 50.3%

   b). Calculate % history of type 2 diabetes for all patients = 91/173 * 100 = 52.6%

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