Asked by Julannah Cobbs on Jul 05, 2024
Verified
To compute the test statistic or t value,what must first be calculated to approximate the sample size?
A) pooled variance
B) standard deviation
C) mean score
D) degrees of freedom
Pooled Variance
A weighted average of variances from multiple samples, often used in statistical procedures to estimate a common variance.
Test Statistic
A value calculated from sample data during a hypothesis test that is used to determine whether to reject the null hypothesis.
Sample Size
The number of individuals or observations included in a sample, which represents part of a larger population for the purpose of conducting statistical analysis.
- Comprehend the core equations and numerical procedures involved in conducting a dependent samples t-test.
Verified Answer
MK
Mallory KatherineJul 11, 2024
Final Answer :
D
Explanation :
The degrees of freedom must first be calculated in order to compute the test statistic or t value. This is because the number of degrees of freedom affects the probability distribution used to calculate the t value. Pooled variance, standard deviation, and mean score are all important measures in hypothesis testing, but they are not directly used to calculate the t value.
Learning Objectives
- Comprehend the core equations and numerical procedures involved in conducting a dependent samples t-test.