MMW - REPONSIBLE HANDLING OF DATA & DATA PRESENTATION

errah's flashcard reviewer for midterm exam :D

ETHICAL AWARENESS

•Knowing what is good and bad and how our actions can affect others.

DATA

•Unprocessed facts

•Set of facts that provides part of the picture.

Information

•Data that has been processed, organized, and given context, making it meaningful and useful.

2 types of data

CATEGORICAL DATA & NUMERICAL DATA

CLASSIFYING NUMERICAL DATA

DISCRETE VARIABLE & CONTINUOUS VARIABLE

TEXT

•Any written or printed words that convey a message.

TABLE

•Set of data arranged in rows and columns.

graph

•Effective visual tool.

•It can reveal trends and relationships within the data.

textual presentation

•Combination of text and numerical facts in statistical reports.

tabular presentation

•It is used when the values are numeric and independent.

GRAPHICAL PRESENTATION

•Showing information using pictures, charts, or graphs instead of just words.

Interpreting Different Graphs

BAR GRAPH, HISTOGRAM, LINE GRAPH, PIE CHART

Measures of Central Tendency

any measure indicating the center of a set data. It is also used to summarize the data.

mean

average

median

used to find middle number or value 

weighted mean

assigned different weight for each value & changes occur

mode

most frequent number that appears (frequency)

UNIMODAL

just one number appears more often than all the others

BIMODAL

2 numbers tie for most frequent

MULTIMODAL

3 or more numbers ties for most frequent

NOMODAL

NO MODE/NO FREQUENCY/NO REPEATS

MEASURES OF DISPERSION

help us understand our numbers better, if we want to know how spread out they are.

RANGE

looking at d biggest to smallest numbers to see how far apart they are

VARIANCE & STANDARD DEVIATION

show how spread out or close together numbers are in a data set

VARIANCE

How much data points differ from mean

SAMPLE VARIANCE

measuring how spread out those scores from the average

STANDARD DEVIATION

Provides an average measure of how far the data points are from the mean and is derived from the variance

SAMPLE STANDARD DEVIATION

TOOL we use to see how spread out the numbers are in as mall group compared to the average number in that group. 

SYMBOL: “s²”

MEASURE: VARIANCE

SYMBOL: “R”

MEASURE: RANGE

SYMBOL: IQR

MEASURE: INTERQUARTILE RANGE

SYMBOL: S

MEASURE: STANDARD DEVIATION

STEP 1:

UNDERSTAND UR DATA

STEP 2:

CONSIDER THE SCALE OF THE MEASUREMENT 

STEP 3:

ASSESS DATA DISTIRBUTION

STEP 4:

DETERMINE THE PRESENCE OF OUTLIERS

STEP 5:

SELECT THE MEASURE

STEP 6

INTERPRET THE RESULT

STEPS 1 TO 6 -

STEPS TO IDENTIFY D RIGHT MEASURE OF DISPERSION OF DATA