Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
Mean (single data)
|
sum of scores/ number of scores
|
|
|
Mean (grouped data)
|
sum of fx (scorexfrequency) / sum of frequency
|
|
|
Standard Deviation (single data)
|
sum of the scores squared/number of scores - mean squared
|
|
|
Standard deviation (grouped data)
|
sum of fx squared/ sum of the frequency - mean squared
|
|
|
what is IQR
|
Q3-Q1
|
|
|
median of odd numbers
|
score + 1 /2
|
|
|
median of even numbers
|
score / 2
|
|
|
what is n
|
number of scores
|
|
|
what is x
|
sum of scores
|
|
|
what is the column order of a table
|
x | f | cf | fx | x2 | fx2 |
x= score fx=score x frequency f=frequency x2= score squared cf= cumulative frequency fx2=fx squared |
|
|
what is the collumn order for grouped true class
|
true class limit | mid point | frequency | score squared| score x frequency | fx squared
|
