Statistics and Probability Review

A method of systematically gathering information on a fraction of a population (called samples) for the purpose of inferring quantitative descriptors of the attributes of the population

• Survey

• Interview

• Census

• Experiment

A study occurs if the entire population is very small, or it is reasonable to include the entire population. It is called a census because data is gathered on every member of the population.

• Survey

• Interview

• Census

• Experiment

The purest form of Sampling

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

What is the sampling technique used when the population is large or when it involves subjects residing in a large geographic area?

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

What is the sampling method that relies on arranging the target population according to some ordering scheme and involves a random start and then proceeds with the selection of every kth element from then onwards?

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

What is the sampling method which obtain samples by dividing the population into subgroups or strata according to some characteristic relevant to studies?

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

The registrar gave the researcher a list of 300 Grade 11 students of a certain school. The researcher selected every 15th name on the list. What type of sampling the researcher should use?

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

A researcher interviewed people from each barangay in the City of Antipolo for his research on population. What type of sampling the researcher should use?

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

The researcher interviewed all top 5 Grade 12 students in each of 20 randomly selected private schools in Antipolo City. What type of sampling the researcher should use?

• Simple Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

What is the probability area of z=1.25

• 0.8944

• 0.8749

• 0.9265

• 0.9115