University:
Lehman College
Course:
BIO 230 | Microbiology
Academic year:

2022
Views:

368

Pages:

9
Author:

Cindy Beck

One of the following types of sample is a probability sample Snow ball sample. * Stratified sample. Quato sampling Expert sampling According to time of study it classified to Descriptive and analytical Single and multiple groups Qualitative and quantitative *Prospective and retrospective Qualitative variables can be graphically presented by *pie chart Histogram, Bar chart Line chart, frequency polygon frequency curve and pie chart The following study provides the strongest evidence within the different types of epidemiological study designs Cohort Case- control cross-sectional *Randomized controlled clinical trail In Negatively skewed data .11 (shifted to the left) Mean > Median O *Median > mean Mean = median mode = mean Relative risk can be calculated from..............study Descriptive study Case control *cohort case-series Sample should be increased in size in the following condition High prevalence of the study problem O small number of variables studied *low prevalence of the study problem health topic is not important O For the following data set 3, 5, 6,9,2,1,7,10,6 *mode 6 mean 5.5 range 10 midrange 6 Hypothesis is defined as to assume certain situation and the study would either prove or disprove this assumption *true False Correlation and regression are the tools used to test comparison between data true *false 1/1* Sampling saves, time money and v effort *True False 1/1*Relative risk is a ratio of two proportions False *True 1/1* Odds ratio is calculated in cohort studies True *False 1/1* To compare the efficacy and safety of a new drug versus a standard drug the most suitable study design is Cross-sectional study case control cohort C *clinical trials 1/1*Continuous Data are all the following except Expressed in numbers Can't be counted but can be measured *heart rate and respiratory rate are examples Can be divided up into decimal parts ( 1/1* Categorical variables can be transformed into numerical variables True False * 0/1 Numerical Variables can be X transformed into nominal variables *True False False 0/1*RH blood groups is a X trichotomus variable *True False *False 0/1 * In cluster sample X the members of the population are ordered in some way. we randomly choose from the target population clusters are naturally occuring *clusters are naturally occuring 0/1 * Case-control study X is suitable for studying rare exposures is optimal for studying diseases with long incubation X can estimate the relative risk O takes long time to be conducted *is optimal for studying diseases with long incubation

Microbiology (Tests)

Related Documents

Description

Related Documents

Free up your schedule!

Take 5 seconds to unlock