Clinical statistics 1 Flashcards
Why is it important for dental students to know biostatistics
- Enable research skill to make independent judgement
- Know which sources are reliable
what are the two types of data
what is categorical data
the data is in the form of category
what is quantitative data
means the data is numerical format.
Name types of categorical data
what is binary data
- most common categorical data
- only has 2 outcomes
- YES/NO
what is nominal data
order does not matter in categories
what is ordinal data
what is quantitative data
we can understand it in terms of numerical values, and we can do arithmetical calculation on those values, which for categorical data, you cannot add them up, can you?
Examples include counting, time, age, height and etc.
What is Discrete data
It can be discrete, such as counting, you cannot have 1.5 children in your family, or 22.3 people in your class.
what is continuous data
What is descriptive statistics
Descriptive statistics is a way that we present our data so that people can understand, without looking at the original raw data. There are two ways we can do: graphical technique, or numerical technique.
what to look out for when data visualtions
what is the first rule of statitistics
what is frequency plots
How is continuous data plotted
Describe distribution shape and Box and whisker plot
How can we describe data numerically
Another way to describe the dataset is to use numerical values to describe ‘central tendency’ or the ‘dispersion’. In this course we just focus on these two properties.
For central tendency, there are three ways to describe that: mean, median and mode.
For variation, we commonly use variance and std.
what are the 3 measures of central tendency
what is the mean
what can the mean be affected by
what is the median
what s the mode
what is the mode affected by
which measure of central tendency is best
what are measures of dispersion
what is the range
Describe quartiles
what is the interquartile range
what is sample variance
why squared deviations
what is sample standard deviation
describe shape of dsitibtuion and what it means if a data is left- swelled , symmetric or right skewed
