TNS EXAM 2025 | QUESTIONS| WITH
100% VERIFIED ANSWERS!! 2024 2025
LATEST UPDATE
, What is the primary motivation of experimentation? - ANSWERTo disprove or fail to
disprove a hypothesis
What does the scientific method consist of? - ANSWERFormalized steps where by a
theory is formed, tested, and revised
What's the purpose of hypothesis testing? - ANSWERUsed to evaluate the strength of
evidence from the sample and provides a framework for making determinations
When should a t-test be used? - ANSWERWhen comparing the averages of two
groups, with relatively small samples
How to read T value? - ANSWER- larger T-value = the more different the groups are
- more different groups are = better chances that groups are "significant"
How to read P value? - ANSWER- smaller P value = more different the groups are
- threshold: .05 or .01 usually
- the probability of being wrong if you conclude that your groups are different
When to use an ANOVA test? - ANSWERWhen making multiple comparisons between
groups
- because if we were to do a t-test, it would be more likely to make an incorrect
conclusion since each additional comparison with a t-test multiplies probability of
making a mistake
What is the alpha value? - ANSWERthe probability of making a type 1 error (false
positive) that a researcher is willing to make (usually it is 0.05)
- threshold value used to determine whether a test statistic is statistically significant
What is a sampling distribution? - ANSWERMean, Proportion, and T-sampling
distribution
- generally uses the central limit theorem for construction
What is the critical value? - ANSWERIt is the cutoff between retaining or rejecting null
hypothesis
- regions where test statistic is unlikely to lie
What is the obtained value? - ANSWER
What is Magnetic Resonance Imaging? - ANSWERIt is a cylindrical magnet with an
open bore, and has an electromagnet. It is usually super conducting. It various transmit
and receive antennae through radiofrequency.
100% VERIFIED ANSWERS!! 2024 2025
LATEST UPDATE
, What is the primary motivation of experimentation? - ANSWERTo disprove or fail to
disprove a hypothesis
What does the scientific method consist of? - ANSWERFormalized steps where by a
theory is formed, tested, and revised
What's the purpose of hypothesis testing? - ANSWERUsed to evaluate the strength of
evidence from the sample and provides a framework for making determinations
When should a t-test be used? - ANSWERWhen comparing the averages of two
groups, with relatively small samples
How to read T value? - ANSWER- larger T-value = the more different the groups are
- more different groups are = better chances that groups are "significant"
How to read P value? - ANSWER- smaller P value = more different the groups are
- threshold: .05 or .01 usually
- the probability of being wrong if you conclude that your groups are different
When to use an ANOVA test? - ANSWERWhen making multiple comparisons between
groups
- because if we were to do a t-test, it would be more likely to make an incorrect
conclusion since each additional comparison with a t-test multiplies probability of
making a mistake
What is the alpha value? - ANSWERthe probability of making a type 1 error (false
positive) that a researcher is willing to make (usually it is 0.05)
- threshold value used to determine whether a test statistic is statistically significant
What is a sampling distribution? - ANSWERMean, Proportion, and T-sampling
distribution
- generally uses the central limit theorem for construction
What is the critical value? - ANSWERIt is the cutoff between retaining or rejecting null
hypothesis
- regions where test statistic is unlikely to lie
What is the obtained value? - ANSWER
What is Magnetic Resonance Imaging? - ANSWERIt is a cylindrical magnet with an
open bore, and has an electromagnet. It is usually super conducting. It various transmit
and receive antennae through radiofrequency.
