sTATs eXAm

• sampling technique by which every member of the population is selected with a random start
• Multi-stage sampling - it is a sampling technique that is done using the combination of different sampling technique
• Purposive Sampling - type of non-probability sampling technique were in samples are chosen based on the goals of the study
• Convenience Sampling - it is also known as accidental, opportunity, or grab sampling.
• Stratified Sampling - A sampling technique in which every number of the population has an equal chance of being selected
• Sampling Distribution - it is a probability distribution were all possible sample size n are repeatedly drawn from a population
• 386 - using the sloven's formula, what is the sample size n for N=11, 000 and e=5%?
• Significance - it is defined as the quality of being statistically significant
• 220 - How many possible samples of size n=3 can be drawn from a population of size 12?
• Left skewed - is the shape of the sampling distribution of the means if random samples of size n become larger
• Test Statistic - it is tested by a statistical test
• Alternative Hypothesis - it is the process in making decisions in evaluating claims about a population
• One sided test - it is chosen when the parameter is larger than or smaller than the value of the null hypothesis
• Alternative Hypothesis - this assumes that there is a change , difference, relationship, or the independent has an effect on the dependent variable
• Null Hypothesis - this assumes that there is no changes, no difference, relationship, or the independent variable has no effect on the dependent variable.
• 0.01 - if the confidence level is 99, what is the level of significance?
• 0.025 - if the significance label in the alternative hypothesis is 0.05, what is the value oh alpha?
• Critical Region - it is a range of values that corresponds to the rejection of the null hypothesis
• Critical Values - it is the number or numbers that determine the rejection region
• two tailed - it is the type of test were the critical region is at the left and the right side of the acceptance region
• Parameter - it describes the entire population
• Ho: h = 29.5 years - The Average age of the Habal-habal drivers in Jasaan is 29.5, what hypothesis that will describe tha claim symbol?
• at most - the following are the key words of > except
• 0.1 - the following alpha is true for an alternative hypothesis except,
• 2.6 - if X(12, 15), what is the standard deviation
• 56 - nCr, where n=8 and r=5, what is the combination?
• When the null hypothesis is rejected which of the following is true?

  There is sufficient evidence to back up the decisions
• Teacher Anna want to test w ether the general average of students her students in math is different from 80%. The following are not true for her claim except,

  Ho: The general average of students in math is equal to 80%