This past lessons in statistics and probability provides me a lot of new information that I didn’t know
before. For instance, this lesson has taught me how to recognize and define statistics, which is the
mathematics we use to gather, organize, and evaluate statistical data. I also learned about the
distinction between qualitative and quantitative variables as well as the difference of the two types of
quantitative variable which are discrete and continuous. This also informed me about the way of finding
the mean of a data set by finding the sum of the data and dividing it by the number of values. Aside
from that, I was able to understand the ways of finding the z-score of a data set to compare data sets.
The z-score can be found by calculating using the formula z = (x-μ)/σ. I also learned how to solve for the
probability and how to use a bell-shaped graph on applying normal distribution. The mean, standard
deviation, and x value are commonly used to measure it. I was also able to differentiate parameters and
statistics and was able to know the steps on getting the population/sample mean, population/sample
variance, and population/sample standard deviation. Any statistical quantity that describes a given
population or some part of it is referred to as a parameter. This implies that the parameter provides
information about the whole population. Statistics are numerical representations of data from a sample,
specifically a sample of the total population. And to get the population/sample mean, simply add all the
data and divide it by number of samples. To calculate the population/sample variance, Subtract the
mean and square the result, then get the mean by adding all the squared differences and dividing by the
number of items. In order to get the population/sample standard deviation, take the square root of the
sample variance. Now to sum up what has been said so far, statistics entails gathering, arranging,
summarizing, evaluating, and interpreting data from a population. I discovered some of the most useful
methods for analyzing concepts, testing hypothesis, and finding the facts or truths when learning
statistics and probability. I think it is important for us to study statistics to acquire information that will
assist us in comprehending the data that we will be evaluating in the study. Through this, we learn how
to measure the average and variance, as well as random sampling and other principles.