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WorksheetsBioStat Finals (Part 1)
Total questions: 50
Worksheet time: 29mins
A scientific body of knowledge which deals with collection, presentation, interpretation and analysis of data.
Probability
Statistics
Sequence
Geometry
Facts , or a set of information or observation under study.
Data
Population
Sample
Variable
It is the collection of all individuals or objects from which the required information is to be obtained.
Data
Population
Sample
Variable
It is a small portion or part of a population.
It is the subgroup, subset or the representative of a population.
Data
Population
Sample
Variable
A particular information of interest about the members of either the population or a sample.
Data
Population
Sample
Variable
Which of the following in not an example of qualitative variable?
Birthplace
Gender
Shoe Size
Occupation
Which of the following in an example of quantitative variable?
Arm Span
Blood type
Gender
Occupation
Which method of collecting data is the most appropriate for testing the effectiveness of a new vaccine?
Experimental
Interview
Observation
Questionnaire
Which method of collecting data is the most appropriate for learning experience of a student?
Experimental
Interview
Observation
Questionnaire
Which method of collecting data is the most appropriate for monitoring the performance of students with special needs?
Experimental
Interview
Observation
Questionnaire
This method of data collection requires a long time for all returns to come in, subject to misinterpretation from respondents, delicate questions cannot be included.
Experimental
Interview
Observation
Questionnaire
The first step in any statistical work after the formulation of the problem. It is the process of obtaining information.
Tallying
Finding the Mean, Median and Mode
Graphing
Collection of Data
_____________________ statistics consists of the collection, organization, summarization and presentation of data.
mathematical
descriptive
inferential
population
_____________________ statistics consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions.
mathematical
descriptive
inferential
population
Information will be collected to new voters for 2004 election to identify their opinion regarding politics in the Philippines. TYPE OF THE VARIABLE OF INTEREST?
Qualitative
Quantitative Discrete
Quantitative Continuous
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The admissions office would like to conduct a survey on the preferred courses of 4th year high school students. TYPE OF THE VARIABLE OF INTEREST?
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Qualitative
Quantitative Discrete
Quantitative Continuous
Which of the following statements is correct?
The mean of sampling distribution of the means is less than the population mean.
The mean of the sampling distribution of the means is equal to the population mean.
The mean of the sampling distribution of the means is greater than the population mean.
The means of the samples drawn from a population may be equal, greater than, or less than the population mean.
What type of sampling should be chosen if you want to know the opinion of Netflix users
Cluster
Quota
Convenience
Stratified
12,10,10,10,13,12,11,13,10
0, 2, 4, 6, 8, 9
Statistic help us to...
obtain data and then organize and analyse
obtain data and then organize, summarize, present, analyze, interpret and reach conclusions
obtain data and then organize, summarize, present and analyze
plan studies and experiments
What is the variance for the following set of scores:
2, 2, 2, 2, 2
0
1
2
4
Given the following data set, what is the 5th decile?
15, 13, 14, 10, 13, 18, 10, 16, 13, 15, 17, 12
13
13.5
14
14.5
Those which divide the distribution into100 equal parts.
Range
Quartile
Decile
Percentile
The main purpose of descriptive statistics is to:
Summarize data in a useful and informative manner.
Make inferences about a population.
Determine if the data adequately represents the population.
Gather or collect data.
What level of measurement is the Centigrade temperature scale?
Ratio
Interval
Ordinal
Nominal
Why is it important to present the information in a picture form?
To be attractive in the eye of the audience.
To analyze and interpret figure or large number at a glance.
To show how artistic the presentor is.
To easily discuss the information.
Which tests require an independent groups design?
Chi squared
Mann Whitney U
Spearman's Rho
Wilcoxon T test
Which test is used for correlations?
Mann Whitney U
Spearman's Rho
Wilcoxon T test
Chi Squared
Data which can be measured on a fixed scale with no absolute zero
Nominal
Ordinal
Interval
Ratio
This figure can be affected by anomalous results
Standard deviation
Mode
Mean
Range
A p-value of P=0.05 means
there is a 0.05% probability the results are due to chance
there is a 0.5% probability the results are due to chance
there is a 50% probability the results are due to chance
there is a 5% probability the results are due to chance
You are a social researcher interested in the relationship between income and happiness. You survey 500 people whose incomes range from 15k to 75k and ask them to rank their happiness on a scale from 1 to 10.
Chi-Square Test
Matched/Paired Sample Test
1-way ANOVA
Regression
Is gender independent of education level? A random sample of 395 people were surveyed and each person was asked to report the highest education level they obtained.
Chi-Square Test
Matched/Paired Sample Test
2-sample Independent Test for Mean
Regression
The Christian population in the US is 75%. But you gathered 1,000 Americans and found out that there are 60% of them who are Christians. Do you think there is enough claim for you to say that your proportion is different?
1 sample z-test for Mean
1 sample t-test for Mean
1 sample z-test for Proportion
1 sample t-test for Proportion
What is the rule of R for a Pearson's test?
The observed value must be equal to or less than the critical value
The observed value must be equal to or more than the critical value
The critical value must be equal to or less than the significance level
The observed value must be equal to or less than the significance level
Why would a researcher be likely to make a type 1 error?
Because they used a significance level that is too high
Because they chose the wrong statistical test
Because they calculated the test incorrectly
Because they used a significance level that is too low
The null hypothesis always contain a(an)
< or >
=
>
= or >
=
Which of the following is NOT a measure used in inferential statistics?
z score
t test
z test
Student's test
Patrick claims that he can achieve a score of at least 215 in bowling. Write the null and alternative hypotheses and state which hypothesis represents the claim.
H0: μ ≤ 215
Ha: μ > 215 Claim
H0: μ = 215 Claim
Ha: μ ≠ 215
H0: μ ≥ 215 Claim
Ha: μ < 215
H0: μ ≤ 215 Claim
Ha: μ > 215
Which test should you use to compare the means of a before and after situation, assuming that the data is normally distributed?
Mann-Whitney U test
Wilcoxon Signed Rank Test
Paired T-test
Independent t-test
What are the measures of relative locations?
Percentiles
Quartiles
Z-score
All of the above
What is the purpose of a confidence interval?
To measure the height of all men in the NT
To detect outliers in a data set
To provide an estimate of the true unknown population parameter
To compute the z-score of a data value
What is the relationship between the level of confidence and the width of the confidence interval?
They are directly related
They are inversely related
They have no relationship
It depends on the sample size
A statement about the value of a population parameter is called:
(a) Null hypothesis
(b) Alternative hypothesis
(c) Simple hypothesis
(d) Composite hypothesis
Type 1 error occurs when?
a) We reject H0 if it is True
b) We reject H0 if it is False
c) We accept H0 if it is True
d) We accept H0 if it is False
