FALL QUARTER 2008 FST 117 STATISTICS
LOCATION Robert Mondavi Institute Sensory Wing Lecture Hall 5:00 8:30pm MONDAYS or TUESDAYS LECTURER: Mike O'Mahony Room 2032 R.M.I. Sensory Wing PHONE: 756 5493 OFFICE HOURS: phone 756 5493 anytime between 8am a
WEEK 1: INTRO TO STATISTICS
WHY STATISTICS?

Statistics is useful to differentiate truth from randomness in our data. Statistics does
that by making a measurement about a sample, instead of the whole population.
Proper sampling methods (e.g. stratified r
This is a dataset obtained from an experiment comparing four different treatments:
a t A _ _ B _ C D,_
; 1 7 4 9
3 6 5 5
;5 8 4 2
2 4 3 7
4 6 6 2
2 8 7 9
MEAN 2.83 5.50 4.83 5.67
ANOVA Table
Source of Sum of Degree of Mean of F value
*WVqriation Square
Table 6.4.3 Probability of X or More Correct Judgments in n Tn'als (onetailed, p = ma
"0' 2 3 4 5 6 7 a 9 0 n 12 3 u 15 16 )7 la 19 20 2 22 u 2 25 '16 37 7B 29 30 M 32' J3 34 35 n.
5 9 E12 son 188 031
6 984 891 666 3 09 016
7 992 938 773 500 277 067
RELATED SAMPLE TTEST
Eight panelists scored their liking on 7point hedonic scale for each of two new food
formulations. Their scores are listed below. Based on the data, is there a significant difference
between the liking scores for the two formulation
WEEK 3: CHISQUARE TEST AND tTEST
CHISQUARE TEST


Oneway classification chisquare is a one sample test for two or more categories
(nominal data)
( )2
2
=
With df = N 1
Twoway classification chisquare can be used to analyze frequency data coming
WEEK 2: BINOMIAL TEST AND LOGIC OF INFERENTIAL STATISTICS
HYPOTHESIS TESTING





The first step of hypothesis testing is to set up the null hypothesis and alternative
hypothesis
o Null hypothesis (H0): no effect, no difference
o Alternative hypothes
An experiment was conducted into the effects of drying methods with three types of drier (tray
drier, fluidbed drier, fluid jet drier) to establish the extent of effects on reconstitution of dried
fruit when dried to constant weight. This was taken as th
A survey was given to a random sample of college students. They were asked whether they prefer to
drink Pepsi or Coke. Of the 251 females in the sample, 185 said they would drink Pepsi. Of the 199 males
in the sample, 107 said they would drink Pepsi. Is t
Homework Set 1
Josephine Kuntjoro (Jojo)
X2
(a) You work for the Equus pure juicy steak company and you provide
a ground beef filling for the famous Equus burger. You make a salt
reduced version of the beef filling and test consumers to see
whether they c
Homework Set 2
X4 ChiSquared, tTests
a. The further up a mountain you go, the less fizzy a fizzy drink becomes because the
carbon dioxide escapes from the drink when the atmospheric pressure is lowered. You
get sample of fizzy drink consumers and requir
Discussion 1
Generate a column of integers 1 to 10 in cells A1 to A10
Drag down, right click, fill cells
Generate a column of random numbers between 1 and 1000 in cells B1 to B10
Use =randbetween(bottom,top)
Bottom = 1
Top = 1000
*Double click on the + si
Coming Winter Quarter, 2009
Science & Society 25, CRN 50427 50438
Global Climate Change:
Convergence of Geophysical, Biological, & Social Sciences
Lectures: Tues. & Thurs. 5:10 6:00 pm, Social Sci. 1100 Discussion: One hour per week at various ti