1. The Causal Research design is used when the ______ factor about some phenomenon or issue is being researched.
Answers:
• Why
• How
• What
• When
2. Prior experience and situational analysis are important in making decisions when a person does not have enough information to calculate the probability of occurrence of an event.
Answers:
• True
• False
3. The following are data collection methods except:
Answers:
• Surveys
• Observation
• Sampling
• Designed experiments
4. Population parameters include the following except:
Answers:
• population mean
• population variance
• population standard deviation
• population hypothesis
5. ______ is one way to understand the relationship between two variables that occur at the same time.
Answers:
• Regression analysis
• Correlation
• Variance
• Sampling
6. ______ is the most frequent value that is present in your data.
Answers:
• Standard deviation
• Mean
• Mode
• None of the above
7. A study finds that children who spend more hours in TV viewing score lower class grades in school. This correlation is an example of:
Answers:
• Positive correlation
• Negative correlation
• No correlation
8. Arranging your target population in an ordered scheme from which participants or items are chosen at regular intervals is an example of:
Answers:
• Simple random sampling
• Systematic sampling
• Stratified sampling
9. When a researcher doesn't know much about a certain problem and wants to gain more information about it, which research design will he use?
Answers:
• Exploratory
• Descriptive
• Casual
10. The _____ is a useful tool for assessing whether the means of two groups of variable are statistically different from each other.
Answers:
• sample mean
• T-test
• null hypothesis
• alternative hypothesis
11. There are two ways to present categorical data. One is by way of graphs, the other is by way of _________.
Answers:
• charts
• pie diagram
• histograms
• tables
12. Describe the relationship between the two variables in the above given scatter plot.
Answers:
• Positive
• Negative
• No correlation
• Weak negative
13. When a person conducts analysis using data he or she has not collected, the source of such data is called:
Answers:
• Primary source
• Secondary source
• Firsthand source
• Basic data source
14. Which of the following form(s) part of descriptive analysis?
Answers:
• Collecting raw data
• Summarizing raw data
• Analyzing raw data
• All of the above
15. While following the Scientific Research steps, a researcher has to construct a hypothesis soon after defining the problem.
Answers:
• True
• False
16. A sample of a population is:
Answers:
• a subset of the population you are studying.
• a set of entities concerning which statistical inferences are to be drawn.
• a set of potential measurements or values.
• a subset of potential future subjects.
17. The formula given above is that of:
Answers:
• Population variance
• Population mean
• Population standard deviation
• Z-score
18. The relationship between two variables is of two types. One is Linear, the other is:
Answers:
• Positive
• Curvilinear
• Negative
19. Which type of sampling method solicits the opinions of pre-selected experts?
Answers:
• Convenience sampling
• Judgment sampling
• Stratified sampling
20. According to probability concepts, the chance that an event will never happen is:
Answers:
• between 0 to 1
• 0
• 1
• a and c
21. Which of these can be used as source(s) of data collection?
Answers:
• Magazines and Newspapers
• Census Bureau
• Television
• a & b
22. Probability can be determined by:
Answers:
• Subjective Evidence
• Prior Knowledge
• Future Knowledge
• a and b
• a and c
23. If a company's production is consistently going down due to some reasons, which technique or method would you employ to analyze those reasons/causes?
Answers:
• Simple linear regression
• Multiple linear regression
• Critical analysis
• Correlation analysis
24. Statistics is a branch of __________.
Answers:
• psychology
• geography
• mathematics
• social science
25. Which important information does the correlation analysis of variables give about the relationship between the variables?
Answers:
• Type of relationship
• Interdependency of relations
• Strength of relationship
• a & b
• a & c
• b & c
26. What is the probability of occurrence of a Type I error referred to as?
Answers:
• Level of significance
• Level of error
• Level of probability
• Level of acceptance
27. The population you are interested in studying is called:
Answers:
• Sample population
• Item population
• Target population
28. Standard deviation is the most common measure of __________.
Answers:
• dispersion
• central tendency
• clustering
29. The components of Simple Linear Regression model include the following except:
Answers:
• The slope
• The random error term
• The intercept
• The dependent variable
30. Stem and leaf display is an example of:
Answers:
• Frequency distribution
• Ordered array
• Pareto diagram
• None of the above
31. When you are figuring out How to collect, process and analyze data, you are:
Answers:
• Designing your research
• Analyzing your data
• Reporting new findings
• Constructing a hypothesis
32. The following statements regarding a Hypothesis are true except:
Answers:
• A hypothesis is an educated guess.
• It is an assumption based on relationship between two or more variables.
• It helps to design your research.
• It can be true or false.
33. Statistics can be divided into 2 broad sections. One is Descriptive Statistics, the other is:
Answers:
• Inferential Statistics
• Cumulative Statistics
• Differential Statistics
• Analytical Statistics
34. In statistical analysis, central tendency points to the clustering of the data around a _____________.
Answers:
• median
• central value
• mode
• point
35. Which data category uses numbers to indicate a classification?
Answers:
• Cardinal
• Ordinal
• Nominal
• Parametric
36. Numerical data can be presented by way of which of the following:
Answers:
• Ordered array
• Pareto diagram
• Frequency distribution
• a&b
• a&c
• b&c
37. Trying to learn more about a larger population from a small sample, is an example of:
Answers:
• descriptive analysis
• inferential analysis
• exploratory analysis
• none of the above
38. Of the three Measures of central tendency, which one is the most sensitive to outliers?
Answers:
• Mean (Arithmetic)
• Median
• Mode
39. _________ is one of the basic methods of inferential statistics that helps a researcher determine the difference between a real and a random pattern in a data set.
Answers:
• Hypothesis testing
• Population parameters
• Regression analysis
• Sample testing
40. Cluster sampling and Stratified sampling form part of Probability Sampling Methods.
Answers:
• True
• False
41. Probability proves useful:
Answers:
• in understanding the probability of occurrence of an event or a phenomenon.
• in deducing larger implications from a given data.
• Both a and b
• Neither a nor b
42. Cross tabulation of data is possible through the following:
Answers:
• Contingency tables
• Scatter plot
• Side-by-side bar chart
• All of the above
43. The correlation co-efficient quantifies the strength of the relationship between two variables and the value of this co-efficient falls between:
Answers:
• -1.0 and +1.0
• +1.0 and +0.81
• -1.0 and -0.81
• -0.21 and +0.40
44. Examples of Measures of central tendency include:
Answers:
• Mean
• Range
• Variance
• None of the above
45. While accepting or rejecting a null hypothesis , ________ are the regions that help to arrive at a decision.
Answers:
• special regions
• borderline regions
• critical regions
46. A good research plan should include the following except:
Answers:
• Research Questions
• Research Designs
• Prior Knowledge
• Participants
47. What will be the potential sampling frame(s) for a survey whose target population is infant children?
Answers:
• medical facilities (such as hospitals and clinics) recording births within the past 12 months.
• households whose occupants include infants under 12 months old.
• Official school directories
• Both a and b
48. The advantage(s) of Scientific Research Method is/are:
Answers:
• It investigates the problem exhaustively
• It is a systematic, controlled and empirical investigation of hypothesis.
• a and b
• None of the above
49. Which graphical tool is used to arrive at decisions by presenting and comparing a number of competing alternatives?
Answers:
• Contingency table
• Bar graph
• Decision tree
50. The process in which data about the variables is collected and then predictions are made about future outcome is called:
Answers:
• Regression analysis
• Future analysis
• Correlation analysis
• None of the above
