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What is the Total Area under the Normal Curve?
1
Based on the empirical rule, the bell-shaped distribution will have approximately 68% of the data within what number of standard deviations of the mean?
A researcher was given a random list of all graduating senior high school students. He decided to conduct a survey by asking every seventh student on the list regarding the courses that they want to take in college. What type of sampling technique he is planning to use?
Systematic Sampling
A population consists of five (5) measurements 2, 3, 6, 5, and 7.
How many different samples of size 𝑛=2 can be drawn from the population?
10
What do you call a number that describes a sample characteristic?
Statistic
If the population mean is 100, what will be the mean of the sampling distribution of the sample mean?
100
If the variance of a certain probability distribution is 16, find its standard deviation.
4
_______ contains the corresponding area of the z value.
Z-table or Table of Areas Under Normal Curve
The principal groups the senior high school students according to what barangay they live. He randomly chooses 5 barangays and then includes all the students living in the randomly chosen barangays in the sample. Which random sampling technique does he apply?
Cluster Sampling
Which part of a normal curve is asymptotic with the horizontal axis?
Tail
Converting a random variable x to a standard normal variable or z-score is a procedure called?
“standardizing” or “standardization”
A parameter describes a ______ while a statistic describes a ______.
Population; Sample
What is the other term or name for 68% - 95% - 99.70% rule?
Empirical Rule
Table of Areas Under Normal Curve
Subtraction/Subtract
There are 2 type of Sampling, The Probability and Non-probability. If in Non-probability there are 2 types (Convenience and Purposive), How many are there in Probability and name it.
4:
Simple Random Sampling
Systematic Sampling
Stratified Sampling
Cluster Sampling
According to the Central Limit Theorem, what happens to the shape of the sampling distribution of the sample mean as the sample size $n$ increases?
It approaches a normal distribution.
Which of the following is a parameter?
A. 𝜎2 B. s C. 𝑥̅ D. s2
A. 𝜎2
A population of a certain LGBTQ+ community consists of six (3) measurements 2, 3, and 6.
What is the mean μ𝑥̅ of the sampling distribution of the sample mean? (3 points)
3.6
Find the Mean:
18, 5, 13, 9, 11
11.2
What is the shape of a Normal Probability Distributions?
Bell
What do you call a number that describes a population characteristic?
Population
The respondents are being selected based on the goal of the studies of the researcher. What Sampling Technique is being used?
Purposive
To obtain the value of the Population Mean, what formula is used?
μ=∑x/N
Evaluate 5C3
10
How to get the value of the Standard Deviation
Square Root of Variance