Biostatistics & Epidemiology Lect. 1 Part 2

alchemist04's version from 2016-06-24 05:55


Question Answer
How is Descriptive Statistics different from Inferential Statistics?(1) Descriptive Statistics involves Collecting and Summarizing data via the use of means, median and modes and the use of Histogram + Scatterplot to plot graph. While, Inferential Statistic involves Hypothesis testing and making predictions, uses t-test, ANOVA, Linear regression and scatterplot.
Which kind of Statistics is involved in Hypothesis testing and Making predictions?Inferential
Which kind of Statistics is involved in Collecting and Summarizing data?Descriptive
A Statistics that involves the use of t-square test, ANOVA, Linear regression and Scatterplot is ........ ?Inferential


Question Answer
A set of that with number of possible values that is either a finite number or countable number (like 0, 1, 2 etc) usually from a counting number is?Discrete Data
Number of students in a classroom is an example of ......?Discrete Data
Any data or number that is w/n a continuum of values, that can allow any possible value including negative and positive values, is .......?Continuous Data
What are the examples of Continuos Data?(1) Height in inches, (2) Weight in Kg (3) Serum Cholesterol level in mg/dL
T or F? Continuous Data can have decimals?True, mostly measures average of total subject


Question Answer
A set of Statistical Data in which an "equal" value btw data point exists and there is no actual "Zero" along the continuum of data value is ............?Interval data
What is an example of Interval data?Celsius and Fahrenheit temperature
T or F? Interval Data can have Decimals and not necessarily whole number?False, Interval data can only have Whole number.


Question Answer
Data in wh/ the "ratios" btw data points has meaning, the distance btw the numbers is meaningful, and has natural Zero, is called ......?Ratio data
Examples of Ratio Data are?Weight, height, blood count, income etc.
100 lbs is twice as heavy as 50 lbs, is an example of .....?Ratio data
T or F? Ratio data can be in decimals?True


Question Answer
A data that reflects different categories (e.g. ethnicity or gender) of data where a name can be assigned to the different categories. It has no order. What is it called?Nominal Data. It is always indicated by types or kinds
A data that has a particular order and the order has meaning. The order may exist as greatest to lowest, lowest to greatest, or lowest-neutral-greatest (e.g. age group). What is it called?Ordinal data. (ordinal = order). It is not a countable number
T or F? Cumulative Frequency Distributions is either in proportion or distributionTrue