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3.3 calculating that stuff from a table(measures of central tendency and dispersion)or, what to do if we have only the table of data and not the raw dataex)whats the mean??note: the table is anapproximation, so the resultwill be an approximationFormula for aweightedmean:note: divide by 12, not 5, because12 is the total frequency (e.g. 25appears 7 times)this is similar to a weighted meanex) get three scores, 80, 95, 70but the first score is your hw grade (that counts 20%) the second score is your midtermgrade (that counts 30%) the third score is your final exam grade (that counts 50%)mean = Σ x · rel.freq(x)x or µ
whats the standard deviation? [extra credit material]s =
Page 1: Please answer the following questio
Page 5 and 6: @ samplinghow do you get your subje
Page 7 and 8: 1.4 sources of errorself-selecting
Page 9 and 10: 1.5 designing an experimentex) find
Page 11 and 12: suggested experiments1 objective: e
Page 13 and 14: suggested experimentsex)objective:
Page 15 and 16: ch2 - organizing and presenting dat
Page 17 and 18: 2.2 presenting quantitative datafre
Page 19 and 20: 19,22,56,20,21,27,32,22,47,25,24,42
Page 21 and 22: 2.4 misleading representations- a g
Page 23 and 24: ch 3: numerically summarizing data3
Page 25 and 26: 3.2 Measures of Dispersionhow sprea
Page 27: sample populationmean x µ "mu"st.d
Page 31 and 32: 3.4, 3.5 measures of position- rank
Page 33 and 34: oxplot- picture of the 5 numbersumm
Page 36 and 37: hw 3.2 questions3.2 online #1) find
Page 39 and 40: a man is 68" tall, for men the mean
Page 41 and 42: hw questions3.4online #4
Page 43 and 44: 45 47 48 56 57 59 60 62 63 64 64 65
Page 45 and 46: what is the mean in our example?not
Page 47 and 48: the normal probability distribution
Page 49 and 50: ex) find P(z 1.37) ?the TOTAL has t
Page 51 and 52: finding a z-score (or data value)gi
Page 53 and 54: ex) find P(z < 1.75)have:want:ex) f
Page 55 and 56: hw questions 6.1#8
Page 57 and 58: hw questions 7.2, 7.37.3 #7
Page 59 and 60: hw questions ch7
Page 61 and 62: hw questions ch77.2 #4
Page 63 and 64: for adult salmon length, µ=42" and
Page 65 and 66: 17% of Americans have high choleste
Page 67 and 68: ex) if p=.28, find P( > .32) with a
Page 69 and 70: hw questions ch8
Page 73 and 74: hw questions ch88.1probability that
Page 75 and 76: hypothesis testing (formally)1. a c
Page 77 and 78: ex) pollution level in a riveran en
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ex) a drug company is trying to mak
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hypothesis test about µ, what if w
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σhave σ dont have σ, have snote:
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ex)H 0 : µ=4H 1 : µ
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ex) does the public believe the dea
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hw questions - ch 10
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hw questions - ch10
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10.6 summary of ch10we have to iden
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ex) you need to know if proposition
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hw questions ch1010.3 #2 online
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10.3-online #2)Ho: µ = 1.67H 1 :
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why might we wind up with two equal
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lets analyze the margin of error:CI
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ex) find the 96% CI for µ when x =
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lets do a confidence interval....fo
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elationship between confidence leve
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ex) are the people in support of st
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hw questions ch99.3#1 construct a C
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hw questions ch9online 9.1#2confide
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hw questions ch9online 9.2#4constru
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ex) are men paid a higher salary (f
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to do a confidence interval for the
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hw questions - ch1111.1 #14x: .582
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linear correlation and regression [
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Doing Regression and Correlation us
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Probability [ch5]...from a more mat
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finding probabilities from real-wor
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ex) roll a dieP(roll a 6, then a 3,
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