Flashcards
Bioinformatik
Flashcards do conjunto (12)
- 1What is (Bio)informatics?1. Application of statistical methods to scientific research in biology and medicine
2. Development of new tools
3. answer scientific questions - 2What are general steps to solve a scientific question?1. identify a problem
2. collect data
3. analyse the data
4. conclusion - 3What two types of statistical methods are there?1. Descriptive statistics
2. inferential (schließende) statistics - 4What is descriptive statistics?- how can we summarize and reduce the data?
f.ex. with a Histogramm
or with descriptive tools such as mean, sd, median... - 5What is inferential statistics?- what can we infere, what can we conclude from the data?
- testing a hypothesis, making predictions about a population
f.ex.: t-test - 6How do we measure the median, mean and mode?Median: (middle value when data is sorted)
mean: (Sum of the values devided by the numbers of values )
mode: (most common value) - 7How to we measure the variance and the standard deviationSD= distance from the mean
Variance= squared distance from the mean - 8What are the two types of data?Numerical and quantitative
- 9What are numerical daa?Quantitative (can be measured numerically)
Can be Continous (height, infinitive number of decimals)
Can be discrete (full numbers or maximum restricted number of values, children can´t be countd in half) - 10What is categorical dataQualitative data
Can be devided into groups or categories
f.ex. hair color, education etc - 11How cann you organize data?stacked data:
Each row is for one individual
• Information for multiple variables is possible
• Should be the primary way to store raw data
Unstacked data
• Divides data in groups
• Can only take two variables at the time
• This format is useful for some statistical tests
two way tables
categorical data can implement two variables (group 1,2 for eye colour blue and brown) - 12What is complete and incomplete data?incomplete data: cruicial data is missing!
Informações
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- O usuário eliminou as informações de disciplina FlashCards sobre Bioinformatik , criado por Usuário eliminado em 14-09-2024.
- Criado por
- Usuário eliminado · set 2024
- Atualizado
- 14 set 2024
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- Criado por Alicia L · 13 set 2024
- Copiado por Alicia L · 14 set 2024
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