DESCRIPTIVE STATISTICS

Question 1

Measure of Central Tendency

Answer 1

Mean
Median
Mode

Question 2

sum of all values divide by the size of the data set, Used when there is symmetric distribution & there are no outliers

Answer 2

Mean

Question 3

middlemost value
used when data is nonsymmetrical
represent the point on the scale or distribution where the half of the variables is greater & other half is lesser

Answer 3

Median

Question 4

value that occurs the most frequently in a data set

Useful in distinguishin unimodal & multimodal distributions

Answer 4

Mode

Question 5

diff. between the largest & smallest observations

Answer 5

Range

Question 6

average of squared deviation from the mean

Answer 6

Variance

Question 7

measurement that shows how much of the values deviate from the mean ;
Square root of the variance

Answer 7

Standard Deviation

Question 8

of existing cases of disease in the population during the defined period

Answer 8

Prevalence

Question 9

number of new cases of disease that develop in the population during defined period

Answer 9

Incidence