15 Data Processing, Presentation And Interpritation Flashcards
(8 cards)
1
Q
What are the 3 equations to find a range for an outlier?
A
Mean +/- 2 standard deviations
UQ+ 1.5IQR
LQ- 1.5IQR
2
Q
What does it mean if a box plot is positively skewed?
A
It’s positive upper quartile is larger than its lower one
3
Q
What is the equation for standard deviation?
A
Root of( sigma(x- mean) squared) over n
4
Q
How do you calculate the median
A
(n+1)over 2
5
Q
What is the equation to find how far a median is into a category?
A
Lower limit+ (how far into category over frequency of category) x width of category
6
Q
What is predicting outside the range of data called?
A
Extrapolation
7
Q
What is the PMCC
A
How straight the point of your graph are in a straight line
8
Q
How do you find the PMCC on the calculator?
A
Stats
Calc
REG
X
ax+b
r
