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[back to top] American Idol  Episodes (Semifinals only)

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# Date Episode / Theme #Cn #Pf Average Rating Hi Lo σ 0-19 20-39 40-59 60-79 80-100
51 39497 Feb 19, 2008
39497 AI7 - Top 24 (Guys)
1960s
 12 12
47.3
 
82 17 17.6 2 4 2 3 1
52 39504 Feb 26, 2008
39504 AI7 - Top 20 (Guys)
1970s
 10 10
51.4
 
93 19 17.9 1 3 2 2 2
53 39505 Feb 27, 2008
39505 AI7 - Top 20 (Girls)
1970s
 10 10
40.3
 
83 5 16.6 2 4 2 0 2
54 39511 Mar 4, 2008
39511 AI7 - Top 16 (Guys)
1980s
 8 8
56.8
 
90 12 15.9 1 1 2 2 2
55 39861 Feb 17, 2009
39861 AI8 - Semi Group 1
Billboard Hot 100
 12 12
46.3
 
80 9 15.6 2 3 2 3 2
56 39875 Mar 3, 2009
39875 AI8 - Semi Group 3
Billboard Hot 100
 12 12
51.8
 
84 12 19.6 2 2 2 5 1
57 39877 Mar 5, 2009
39877 AI8 - Wild Card
Billboard Hot 100
 8 8
48.3
 
72 24 22.0 0 3 2 3 0
58 40232 Feb 23, 2010
40232 AI9 - Top 24 (Girls)
Billboard charts
 12 12
43.3
 
79 7 18.5 3 2 2 5 0
59 40240 Mar 3, 2010
40240 AI9 - Top 20 (Girls)
Billboard charts
 10 10
53.0
 
90 6 16.4 1 3 2 2 2
60 40246 Mar 9, 2010
40246 AI9 - Top 16 (Girls)
Billboard charts
 8 8
51.8
 
90 14 13.3 1 2 2 2 1
61 40603 Mar 1, 2011
40603 AI10 - Top 24 (Guys)
Open
 12 12
50.9
 
90 5 16.7 1 4 2 2 3
62 40968 Feb 29, 2012
40968 AI11 - Top 25 (Girls)
Open
 12 12
52.9
 
85 11 14.5 2 2 2 4 2
63 40969 Mar 1, 2012
40969 AI11 - Wild Card
Open
 6 6
44.5
 
77 18 18.0 2 0 2 2 0
64 41325 Feb 20, 2013
41325 AI12 - Vegas QF Girls 1
Open
 10 10
46.5
 
78 8 14.9 1 4 2 3 0
65 41347 Mar 14, 2013
41347 AI12 - Tour Sing-off
Open
 2 2
46.5
 
47 46 19.5 0 0 2 0 0
66 41689 Feb 19, 2014
41689 AI13 - Rush Week (Guys)
Open
 10 10
46.5
 
74 4 19.4 1 3 2 4 0
67 42060 Feb 25, 2015
42060 AI14 - Top 12 Guys
Open
 12 12
47.0
 
85 10 18.0 2 3 2 4 1
68 42410 Feb 10, 2016
42410 AI15 - Top 24 Solo (i)
Open
 12 12
41.0
 
71 5 18.4 2 4 2 4 0
69 42417 Feb 17, 2016
42417 AI15 - Top 24 Solo (ii)
Open
 12 12
43.1
 
73 24 23.1 0 7 2 3 0
70 43198 Apr 8, 2018
43198 AI16 - Top 24 Solo (i)
Open
 12 12
43.1
 
77 21 22.8 0 7 2 3 0
71 37656 Feb 4, 2003
37656 AI2 - Semi Group 1
Open
 8 8
45.1
 
70 11 19.3 1 3 1 3 0
72 37663 Feb 11, 2003
37663 AI2 - Semi Group 2
Open
 8 8
47.8
 
81 8 16.4 2 2 1 1 2
73 38027 Feb 10, 2004
38027 AI3 - Semi Group 1
Open
 8 8
50.9
 
84 25 21.5 0 4 1 2 1
74 39133 Feb 20, 2007
39133 AI6 - Top 24 (Guys)
Open
 12 12
39.3
 
79 12 18.3 3 5 1 3 0
75 40605 Mar 3, 2011
40605 AI10 - Wild Card
Open
 6 6
55.8
 
82 26 18.3 0 2 1 2 1
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