Bus mAth Flashcards
A spreadsheet and a graphing and database management tool.
Microsoft Excel
From the EXCELL BUTTON, press EXCEL OPTIONS, found the dialogue box
STEPS TO INSTALL DATA ANALYSIS
IKA 1.
a new winodw will appeae. press ADD INS on the first columnx then press GO.
IKA 2
Highlight STATISTICAL TOOLPAK-VBA, then press Go
Steps
3.
Allow excell to install data analysis in less yhan a minute
Step 4
If properly installed, DATA ANALYSIS is now available from DATA
step 5
What is a measure of central tendency?
A measure of central tendency is a single value that attempts to describe a set of data by identifying the central position within that set of data.
What are measures of central tendency sometimes called?
Measures of central tendency are sometimes called measures of central location.
How are measures of central tendency classified?
They are classed as summary statistics.
it may or may not be an actual score in the data
easily affected by highest and lowest scores
Mean
what is the symbol of mean?
–
x
middle entry of an ORDERED LIST OF DATA
Median
symbol of median
~
x
The most frequently occurring entry
mode
symbol of mode
x
a value that is used to descrube ghe spread of a set of data.
Measure of variability
the difference between the highest and the Lowest entry
range
formula of range
Range = He-Le
points which divide the set of data into four equal parts. there are Q1, Q2, Q3
Quartile
difference between the 3rd and 1st quartile
wrn Q1 is median of lower half
Q2 median of the upper
IQR
Formula sa IQR
iqr= Q3- Q1
the average of the squared deviation of every score of the mean
Variance(s²)