AP STATISTICS - how was it?

Test Preparation AP Test Preparation
101

<p>6c was kind of ridiculous...
Anyway, for the formula I know, you need s(e) and s(x), but they don't give you one of those for the SE, so there wasn't a way of doing it...</p>

<p>Weird... and I didn't see number 4 as matched pairs, so I got 0 points for that.</p>

<p>MC was easy, so I hope that a 2 on #6 and a 0 on #4 won't drop me to a 4 ... I need a 5. That's minues 13.75 ish points right there...</p>

<p>And I know that they are beastly mean with partial credit of FR, so I'm going to say 3s on the others, so another minues 7.5, brings my minues to a 21.25.
Which means... I can get like... 6 free response wrong. And scrape a 5. This is sad. I thought statistics was going to be a breeze.</p>

<p>Calc. BC certainly was.
I was highly considering bringing a salt shaker and eating the last three FR problems on Calc. Now, That's intimidating...</p>

102

<p>People have said that you can use the wrong test on an FRQ and still earn some points, so don't necessarily assume a 0 on #4.</p>

<p>MC was pretty easy, but I blanked on part 1 of the first FRQ and just threw some stuff out there, and I probably did part c on #6 wrong.</p>

103

<p>okay wow. I think I am going to get a three. I did fairly well on on MC. But messed up on #6c, #6D, #6e. I did manage to put some stuff down however. in #6d with the graph, what were you supposed to do?</p>

104

<p>Ya whatever. Wait a few more hours and then it'll be okay to discuss the questions on the FR.</p>

105

<p>6C was some sort of linear regression test. That i didnt know how to do, so I just did a confidence interval haha.</p>

<p>6D was easy. You just plot the regression line: 1.02x or something for noncontact, and 1.17x or something for contact</p>

<p>6E, you just explain the slope of the line.</p>

106

<p>Am I the only one who doesn't remember what the FRQs were about? lol (except 6, since ppl keep talking about it XD) ... Do the FRQs get posted today? I really would like to know how I did.</p>

107

<p>For 5c, one of the assumptions for the test wasn't met because the successes and failures weren't over 5, right?</p>

108

<p>cool. i know i got 6c and 6d right. 6e i bombed</p>

109

<p>that's right madmax</p>

<p>in 6c, was H0 supposed to be B = 1? I think I didn't read carefully and put B = 0 and for Ha B > 0.</p>

110

<p>THE FREE RESPONSE HAVE BEEN POSTED ON THEIR WEBSITE!</p>

<p>What did you guys put for 1a? I didn't really get that. I explained the empirical rule and then I said that only applies if it's a normal distribution, which now I see was really stupid, because it obviously wasn't normal.</p>

111

<p>The Form B Free Response questions were so much easier than ours.</p>

112

<p>snipez, Ho B= 0 is correct.</p>

113

<p>im pretty sure that Ho B=1 is right. the question says to test whether or not the participants overestimate the distance. the slope would have to be greater than 1 for that to happen</p>

114

<p>Damn, I put Ho: B=0, and now I realize it's Ho: B=1</p>

115

<p>where can u find the questions?</p>

116

<p><a href="http://apcentral.collegeboard.com/apc/members/repository/ap07_stat_frq.pdf%5B/url%5D"&gt;http://apcentral.collegeboard.com/apc/members/repository/ap07_stat_frq.pdf&lt;/a&gt;&lt;/p>

117

<p>We never learned Chapter 14... this sucks. So our whole class never learned how to do hypothesis testing on regression lines. What were you suppose to do with part d? Never learned that either.</p>

118

<p>"Part e had to do with standard error. At least in the east coast."</p>

<p>No, I was right....it was the interpretation in context</p>

119

<p>yah i dont know what he was talking about east and west coast tests either, they're all the same.</p>

<p>what did you put as your answer?</p>

<p>i put something along the lines of for each increase in 1 foot actual distance there is an avergae increase of x for contact wearers and y for non contact wearers in percieved</p>

120

<p>Hey br2011, I put the same thing as you did for part e(1.02 for contact wearers and 1.17 for noncontact or something like that). I just got messed up on part c where I did H0 B=0.</p>