statistics

1. MULTIPLE CHOICE: Choose the letter of the correct answer on the choices given below. Write the letter of your answer on the space provided before the number. (10 pts.) Choices for items 1 to 4 A. Simple Random Sampling B. Judgmental or Purposive Sampling C. Systematic Sampling D. Stratified Random Sampling 1. Which type of sampling method has a predefined range that is least time-consuming? 2. Which type of sampling method requires the researcher to divide the population into smaller groups that don't overlap but represent the entire population? While sampling, these groups can be organized and then draw a sample from each group separately. 3. It is a method where the researchers divide the entire population into sections or clusters that represent a population. 4. Which is a reliable method of obtaining information where every single member of a population is chosen randomly, merely by chance? Choices for items 5 - 8 A. Convenience Sampling B. Cluster Sampling C. Snowball Sampling D. Quota Sampling 5. It is a rapid method of collecting samples. 6. It is a method wherein researchers purely consider the purpose of the study, along with the understanding of the target audience. 7. It is a sampling method that researchers apply when the subjects are difficult to trace. 8. This method is dependent on the ease of access to subjects such as surveying customers at a mall or passers-by on a busy street Choices for items 9 - 10 A. Probable Sampling B. Non Probability Sampling C. Probability Sampling D. Non Probable Sampling 9. This is a sampling technique where a researcher sets a selection of a few criteria and chooses members of a population randomly. _10. It is a kind of sampling wherein the researcher chooses members for research at random. II. CLASSIFICATION: Classify the appropriate level of measurement for the given data. Write A for Nominal, B for Ordinal, C for Interval and D for Ratio on the space provided. (10 pts.) 1. Citizenship 6. Family Income in pesos 2. Social Class 7. Fahrenheit temperature scale 3. Intelligence test scores 8. Typhoon signal 4. No. of students per classroom 9. Age 5. Competition results 10. Religion L III. SOLVING: Find the standard score or z - score of the following sample or population. Write your solution and answer on the space provided. (5 pts. each) 1. In a Biology test, the mean is 85 and the standard deviation is 5. Assuming that the scores are normally distributed, what percent of the scores is greater than 80? 2. In a final score in Physics, the mean was 76 and the standard deviation was 10. Determine the standard score of a student who received a score of 90 assuming the scores are normally distributed. 3. Consider the normal distribution of IQ' s with a mean of 120 and the standard deviation of 20. What percentage of IQ s are greater than 95? 4. In a final score in Math, the mean was 75 and the standard deviation was 8. Determine the standard score of a student who received a score of 89 assuming the scores are normally distributed