15 Data Processing, Presentation And Interpritation

Question 1

What are the 3 equations to find a range for an outlier?

Answer 1

Mean +/- 2 standard deviations
UQ+ 1.5IQR
LQ- 1.5IQR

Question 2

What does it mean if a box plot is positively skewed?

Answer 2

It’s positive upper quartile is larger than its lower one

Question 3

What is the equation for standard deviation?

Answer 3

Root of( sigma(x- mean) squared) over n

Question 4

How do you calculate the median

Answer 4

(n+1)over 2

Question 5

What is the equation to find how far a median is into a category?

Answer 5

Lower limit+ (how far into category over frequency of category) x width of category

Question 6

What is predicting outside the range of data called?

Answer 6

Extrapolation

Question 7

What is the PMCC

Answer 7

How straight the point of your graph are in a straight line

Question 8

How do you find the PMCC on the calculator?

Answer 8

Stats
Calc
REG
X
ax+b
r