_____________________ is used to compare the variation or dispersion in two or more sets of data even though they are measured in different units.

The resting heart rate for a group of athletes was measured.  If the mean was 50 and standard deviation was 5 then the C.V (Coefficient of variation) is

Based on all the information currently available, you estimate that the patient in your office has a one in four chance of having a serious disease. You order a diagnostic test with sensitivity of 95% and specificity of 90%.

The result comes back negative. Based on all the information now available, the chance your patient really has the disease is closest to: 

Your Medical Science degree goes well and eventually you become a General Practitioner. Based on all the information currently available, you estimate that the patient in your office has a one in four chance of having a particular serious disease. You order a diagnostic test with sensitivity of 95% and specificity of 90%.

The result comes back positive. Based on all the information now available, the chance your patient really has the disease is closest to:

A new diagnostic test for tuberculosis has a sensitivity of 90% and a specificity of 95%.  If applied to a population of 100,000 patients in which the prevalence of tuberculosis is 1%, how many false negative results would you expect? (enter number only)

A measurement which on repetition gives same or nearly same result is called

A measurement which is close to the true value is:

I contributed to the class heart rate data at least the day before my workshop.  

(this will be checked and manually changed if necessary).

The fasting blood glucose levels for a large patient cohort of diabetics was found to be normally distributed with a mean of 105mg per 100ml of blood and a standard deviation of 10mg per 100ml of blood.

From this data you could infer that 95% of the patients have fasting blood glucose between: