Unit 3: Collecting Data - AP Statistics

/ Unit 3: Collecting Data

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You’ll be introduced to study design, including the importance of randomization. You’ll understand how to interpret the results of well-designed studies to draw appropriate conclusions and generalizations.

Question Difficulty:

Question	Difficulty	Students Solved
Identifying Nonresponse Bias in Surveys	easy	9
Variance of a Sample Proportion by Sampling Method	medium	8
Comparing Retrospective And Prospective Studies	easy	7
Response Variable in a Clinical Trial	easy	9
Random Assignment in Experiments	easy	11
Advantage Of Sampling With Replacement	medium	5
Bias in Retrospective Observational Studies	easy	10
Experimental Design Treatments	easy	6
Purpose of a Control Group	easy	5
Systematic Sampling Method	easy	7
Chain Rule Error In Differentiation	hard	2
Selecting an Appropriate Experimental Design	easy	4
Identifying Convenience Sampling	easy	6
Nonresponse Bias in a University Survey	easy	5
Expected Trials in Random Sampling	hard	6
Blocking Design And Confounding Variables	medium	2
Systematic Error and Data Transformation	medium	4
Experimental Design With Blocking	medium	4
Area Under an Exponential Curve	hard	5
Sample Size and Precision of Estimates	easy	4

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Unit Leaderboard

Rank	User	Correct Count	Attempt Count	Time	Score
#1	aadharshmeenak	38	50	0m 00s	3,680
#2	eunsole720	27	39	0m 05s	2,575
#3	diceans	25	30	0m 00s	2,450
#4	h62018675	20	21	0m 00s	1,990
#5	cynthiayihan34	19	22	0m 00s	1,870
#6	krlampe7	17	20	0m 00s	1,670
#7	thanooj_thutaram	15	25	0m 00s	1,400
#8	hp6579950	13	16	0m 00s	1,270
#9	5047093	23	28	16m 49s	1,241
#10	satyaachanti1710	12	13	0m 00s	1,190

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