PSYA01H3 Lecture Notes - Lecture 5: Jane Goodall, Physical Exercise, Rhumba
PSYA01 – Lecture 5: CONTINUATION FROM LAST LECTURE (4):
• Variablility: another characteristic used to quantify the extent to which our data pts. Lie close to
the middle point
18,19,20,21,22 vs. 5, 12, 20,28,35
Mean: -2 -1 0 1 2 -15 -8 0 8 15
Squared: 4 1 0 1 4 225 64 0 64 225
o M.A.D – mean absolute deviation of each data point from the mean of the numbers
1.2 vs 9.2
o Variance – average squared deviation of each data point from the mean 2 vs 115.67
o Standard Deviation = square root (variance) = sqrt (111.3) = 10.75
** “tatistiias dee this as etter **
Correlational Studies – often naturalistic studies lead to c.studies thru. Observation one thinks they see
links/relationships b/w diff. variables DOE“NT MEAN CAU“ATION
- Clouds of points to extract general correlations and relationships to quantify data.
- The positie ad egatie sigs oly refers to the taste of the type of ehaiour; strength of
relationship is due to how HIGH the value is
Examples:
o Jane Goodall - observational link b/w eye gaze & social rank in chimpanzees.
Next step is to measure them (quantify)
o Perceived attractiveness & height *scatterplot*
-Focus on shapes that the points generate to get
general correlations
The Third Variable Issue:
• Company see correlation b/w health and productivity; therefore, wants to invest in some sort of
initiative to promote health/fitness for its employees. Limit sick days and increase productivity
by providing free rhumba once a week BUT discounts pre-existing level of health fitness (3rd
variable)
Variable X – pre-existing lvl of health & fitness
o Variable A: Decision to participate in fitness training program
o Variable B: Days absent due to illness
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Psya01 lecture 5: continuation from last lecture (4): variablility: another characteristic used to quantify the extent to which our data pts. Squared: m. a. d mean absolute deviation of each data point from the mean of the numbers. 1. 2 vs 9. 2: variance average squared deviation of each data point from the mean 2 vs 115. 67, standard deviation = square root (variance) = sqrt (111. 3) = 10. 75. Correlational studies often naturalistic studies lead to c. studies thru. Observation one thinks they see links/relationships b/w diff. variables (cid:894)doe n(cid:859)t mean cau ation(cid:895) Clouds of points to extract general correlations and relationships to quantify data. The positi(cid:448)e a(cid:374)d (cid:374)egati(cid:448)e sig(cid:374)s o(cid:374)ly refers to the (cid:858)taste(cid:859) of the type of (cid:271)eha(cid:448)iour; strength of relationship is due to how high the value is. Jane goodall - observational link b/w eye gaze & social rank in chimpanzees. Next step is to measure them (quantify: perceived attractiveness & height *scatterplot*
