Biostatistics - Quiz
  • 1. Biostatistics is a branch of statistics that deals with data related to living organisms. It involves the design, analysis, and interpretation of data in fields such as biology, medicine, public health, and environmental science. Biostatistics plays a crucial role in research studies, clinical trials, and public health initiatives by providing statistical methods to analyze data, draw conclusions, and make informed decisions. It helps in understanding patterns of diseases, identifying risk factors, evaluating treatment interventions, and predicting health outcomes. Biostatisticians use their expertise in statistical theory and methods to address complex research questions and contribute to advancements in health science and policy.

    What is the purpose of hypothesis testing in biostatistics?
A) To determine if there is enough evidence to reject a null hypothesis.
B) To calculate standard deviation.
C) To estimate the population mean.
D) To prove a hypothesis with 100% certainty.
  • 2. In a clinical trial, what is the role of a control group?
A) To analyze the results.
B) To administer the treatment to participants.
C) To collect data from participants.
D) To provide a baseline for comparison to the treatment group.
  • 3. Which type of study design is best suited for determining cause and effect relationships?
A) Randomized Controlled Trial
B) Observational Study
C) Case-Control Study
D) Cross-Sectional Study
  • 4. Which statistical test can be used to compare more than two group means?
A) Two-Sample t-test
B) Chi-Square Test
C) ANOVA
D) Paired t-test
  • 5. What is the purpose of regression analysis?
A) To estimate population parameters.
B) To explore the relationship between a dependent variable and one or more independent variables.
C) To calculate probabilities.
D) To determine central tendency.
  • 6. Which type of sampling technique divides a population into subgroups and then samples each subgroup?
A) Stratified Sampling
B) Systematic Sampling
C) Cluster Sampling
D) Simple Random Sampling
  • 7. What does p-value indicate in hypothesis testing?
A) The confidence interval of the estimate.
B) The probability of obtaining results as extreme as the observed results, assuming the null hypothesis is true.
C) The strength of the relationship between variables.
D) The sample size required for the study.
  • 8. What is sensitivity in the context of diagnostic testing?
A) The proportion of true positive results among all individuals with the condition.
B) The proportion of false negative results.
C) The proportion of true negative results among all individuals without the condition.
D) The proportion of false positive results.
  • 9. What is biostatistics also referred to as?
A) Bioinformatics
B) Biomathematics
C) Biometry
D) Biomechanics
  • 10. Which field is closely related to medical statistics?
A) Pharmacology
B) Biostatistics
C) Epidemiology
D) Pathology
  • 11. Who started genetics studies by investigating segregation patterns in pea families?
A) Francis Galton
B) William Bateson
C) Gregor Mendel
D) Charles Darwin
  • 12. Who strongly disagreed with Galton's ideas on heredity?
A) Karl Pearson
B) Arthur Dukinfield Darbishire
C) William Bateson
D) Raphael Weldon
  • 13. Which group supported Mendel's ideas on genetic inheritance?
A) Mendelians
B) Neo-Darwinians
C) Darwinists
D) Biometricians
  • 14. Who developed the ANOVA and p-value concepts?
A) Sewall G. Wright
B) Ronald Fisher
C) J. B. S. Haldane
D) Betty Allan
  • 15. Who developed F-statistics and methods of computing them?
A) J. B. S. Haldane
B) Ronald Fisher
C) Sewall G. Wright
D) Betty Allan
  • 16. What did J. B. S. Haldane's book reestablish as the premier mechanism of evolution?
A) Mutation
B) Genetic drift
C) Natural selection
D) Gene flow
  • 17. Who banned the Friden calculator from his department at Caltech?
A) Ronald Fisher
B) Thomas Hunt Morgan
C) Sewall G. Wright
D) J. B. S. Haldane
  • 18. Which of the following is NOT a basic principle of experimental statistics?
A) Sample size determination
B) Replication
C) Local control
D) Randomization
  • 19. What should guide the formulation of a research question?
A) An exhaustive literature review.
B) The experimental design.
C) Data analysis perspectives.
D) Cost considerations.
  • 20. Which component of research planning involves defining how to ask a scientific question?
A) Experimental design.
B) The research question.
C) Costs involved.
D) Data analysis perspectives.
  • 21. Which principle of experimental statistics helps to eliminate bias?
A) Replication
B) Cost estimation
C) Local control
D) Randomization
  • 22. What is the first step in defining a research question according to the text?
A) Outlining experimental design.
B) Conducting an exhaustive literature review.
C) Determining data collection methods.
D) Estimating costs.
  • 23. In the formula for arithmetic mean, what does '∑' represent?
A) Division
B) Product
C) Difference
D) Summation
  • 24. Which cloud service provider is mentioned as a tool for statistical analysis in biological data?
A) Google Cloud Platform
B) IBM Cloud
C) Microsoft Azure
D) Amazon Web Services
  • 25. Which software is used for linear algebra computations?
A) NumPy
B) LAPACK
C) SciPy
D) SageMath
  • 26. What does a Pearson correlation coefficient value of -1 indicate?
A) An undefined relationship
B) A perfect negative correlation
C) No linear correlation
D) A perfect positive correlation
  • 27. Which database is dedicated to Arabidopsis thaliana?
A) dbSNP
B) Phytozome
C) TAIR
D) KEGG
  • 28. Which database stores assemblies and annotation files of dozens of plant genomes?
A) KEGG
B) TAIR
C) Phytozome
D) dbSNP
  • 29. What is another term for a scatter plot?
A) Line graph
B) Scatter chart
C) Pie chart
D) Bar diagram
  • 30. What is a scatter plot also known as?
A) Bar chart
B) Histogram
C) Scattergram
D) Pie chart
  • 31. Which distribution was initially used for RNA-Seq counts data but underestimated sample error?
A) Negative Binomial
B) Binomial
C) Normal
D) Poisson
  • 32. What major initiative relates data from DDBJ, EMBL-EBI, and NCBI?
A) Bioinformatics Data Consortium
B) International Nucleotide Sequence Database Collaboration (INSDC)
C) World Data Exchange Program
D) Global Genome Initiative
  • 33. What does a significance level (α) represent in hypothesis testing?
A) The probability that the null hypothesis is true
B) The correlation coefficient between two variables
C) The range of values for a confidence interval
D) The acceptable error rate when deciding statistical significance
  • 34. Which statistical models are used to perform tests for statistical significance in RNA-Seq data analysis?
A) Generalized linear models
B) ANOVA
C) Chi-square tests
D) Linear regression models
  • 35. Which type of graph is best suited for showing changes over time?
A) Histogram
B) Bar chart
C) Pie chart
D) Line graph
  • 36. What is a genome-wide association study (GWAS) based on?
A) Genomic selection.
B) Linkage disequilibrium.
C) Quantitative trait loci.
D) Recombination frequency.
  • 37. Which biostatistical method has gained popularity for statistical classification?
A) Re-sampling methods
B) Bootstrapping
C) Decision trees
D) Random forests
  • 38. What does marker-assisted selection aim to improve?
A) Clinical decision support systems.
B) Quantitative trait mapping.
C) Breeding outcomes in agriculture.
D) Genomic selection models.
  • 39. Which software package allows for variance component estimation under a general linear mixed model using REML?
A) Orange
B) CycDesigN
C) ASReml
D) SAS
  • 40. How does a well-defined research question benefit the scientific community?
A) By adding value through novel insights.
B) By reducing the need for replication.
C) By minimizing costs.
D) By simplifying data analysis.
  • 41. In a line graph, which axis typically represents time?
A) Both axes equally represent time
B) The vertical axis
C) Time is not represented in a line graph
D) The horizontal axis
  • 42. What is the formula for calculating the total number of observations (N) in a frequency table?
A) N = f1 + f2 + f3 + ... + fn
B) N = fi - N
C) N = fi * N
D) N = fi / N
  • 43. Which programming language is associated with deep-learning and image analysis in bioinformatics?
A) SQL
B) SAS
C) R
D) Python
  • 44. Which programming language is known for its open-source environment and statistical computing capabilities, with packages available on CRAN?
A) SQL
B) Python
C) MATLAB
D) R
  • 45. Which symbol represents the arithmetic mean in mathematical notation?
A) n
B) Σ
C) i
D) x̄
  • 46. What technique considers the perturbation of whole gene sets rather than single genes?
A) Gene Set Enrichment Analysis (GSEA)
B) Linear discriminant analysis
C) Principal component analysis
D) Next-generation sequencing
  • 47. Which aspect of research planning involves determining how to collect data?
A) Cost estimation.
B) Research question formulation.
C) Data collection methods.
D) Hypothesis testing.
  • 48. Which database is used for indexing scientific articles?
A) PubMed
B) dbSNP
C) Gene Ontology
D) KEGG
  • 49. What is the term for high intercorrelation between predictors in biostatistical settings?
A) Dimensionality reduction
B) Gene Set Enrichment Analysis
C) Multicollinearity
D) Principal component analysis
  • 50. Which software is a Java-based tool for machine learning and data mining?
A) Weka
B) R
C) SAS
D) Orange
  • 51. Which biostatistical method helps in reducing dimensionality by transforming predictors into a smaller set of uncorrelated components?
A) Principal component analysis
B) Linear regression
C) Gene Set Enrichment Analysis
D) Logistic regression
  • 52. Which software supports Quantitative Response Assays for regulated environments such as drug testing?
A) PLA 3.0
B) SAS
C) Weka
D) Apache Spark
  • 53. In which field is the design and analysis of clinical trials particularly important?
A) Public health
B) Animal breeding
C) Systems medicine
D) Quantitative genetics
  • 54. Which tool is used for high-level data processing, data mining, and visualization?
A) CycDesigN
B) PLA 3.0
C) Orange
D) ASReml
  • 55. Which mapping algorithm is not commonly used in QTL mapping?
A) Composite Interval Mapping
B) None of the above
C) Multiple Interval Mapping
D) Interval Mapping
  • 56. Which database focuses on SNPs?
A) KEGG
B) PubMed
C) Gene Ontology
D) dbSNP
  • 57. Who introduced histograms as a graphical representation?
A) John Tukey
B) Karl Pearson
C) Francis Galton
D) Ronald Fisher
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