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Express a categorical attribute, rather than relying solely on numerical values to answer queries like “what kind”.
QUALITATIVE
It is also known as numerical data, and its sizes are relevant in answering questions such as “how much” or “how many”.
QUANTITATIVE
What kind of random variable may be classified as discrete or continuous?
QUANTITATIVE
If two coins are tossed once, which is NOT a possible value of the random variable for the number of heads? 0,1,2, or 3?
3
What is the mean value of the given table?
1
In a probability distribution, what is the sum of the probabilities of all possible outcomes?
1
In a normal distribution, which represents the center of the distribution where the curve is symmetrical?
Mean, Median, and Mode
What percentage of the total area under the normal curve is within one standard deviation from the mean?
68%
Which refers to the long-term average or expected value of repeatedly conducting an experiment?
Mean
What formula is used to convert a standard normal variable 𝑧 to a normal random variable 𝑥?
Answer will be written on the board.
Mr. Carreon writes the name of all senior high school students on small pieces of paper. He rolls and puts them in a box and then draws 500 names as respondents in his study.
SIMPLE/LOTTERY
The principal creates a list of all senior high school students. He decides to include every tenth student in his samples.
SYSTEMATIC
Given the sample size and the population standard deviation, compute for the standard error of the mean. 𝑛 = 5 , 𝜎 = 30
13.42
Given the sample size and the population standard deviation, compute for the standard error of the mean. 𝑛 = 8 , 𝜎 = 40
14.14
If a population has a mean of 7.8, what is the mean of the sampling distribution of its mean?
7.8
What can you conclude about the shape of the sampling distribution of the sample mean when the sample size is large?
It approaches a normal distribution.
