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College of Arts & Sciences
Department of Mathematics


Question Statistics 2015

USC High School Math Contest

January 31, 2015

Difficulty Ranking of Questions

Sorted by Question #

 

 

Q#

# Correct

% Correct

# Incorrect

% Incorrect

# Blank

% Blank

Total Points

Rank

1

96

62%

24

15%

36

23%

516

2

2

33

21%

115

74%

8

5%

173

18

3

86

55%

53

34%

17

11%

447

6

4

124

79%

11

7%

21

13%

641

1

5

72

46%

68

44%

16

10%

376

8

6

92

59%

50

32%

14

9%

474

4

7

43

28%

48

31%

65

42%

280

17

8

45

29%

47

30%

64

41%

289

16

9

85

54%

34

22%

37

24%

462

7

10

54

35%

43

28%

59

38%

329

12

11

56

36%

58

37%

42

27%

322

10

12

28

18%

66

42%

62

40%

202

21

13

93

60%

48

31%

15

10%

480

3

14

46

29%

71

46%

39

25%

269

15

15

54

35%

63

40%

39

25%

309

13

16

88

56%

13

8%

55

35%

495

5

17

28

18%

76

49%

52

33%

192

22

18

29

19%

46

29%

81

52%

226

20

19

56

36%

59

38%

41

26%

321

11

20

32

21%

49

31%

75

48%

235

19

21

70

45%

40

26%

46

29%

396

9

22

50

32%

34

22%

72

46%

322

14

23

19

12%

33

21%

104

67%

199

28

24

24

15%

50

32%

82

53%

202

25

25

23

15%

37

24%

96

62%

211

26

26

25

16%

32

21%

99

63%

224

23

27

20

13%

25

16%

111

71%

211

27

28

19

12%

30

19%

107

69%

202

29

29

25

16%

50

32%

81

52%

206

24

30

11

7%

67

43%

78

50%

133

30

Sorted by Difficulty

 

Q#

# Correct

% Correct

# Incorrect

% Incorrect

# Blank

% Blank

Total Points

Rank

4

124

79%

11

7%

21

13%

641

1

1

96

62%

24

15%

36

23%

516

2

13

93

60%

48

31%

15

10%

480

3

6

92

59%

50

32%

14

9%

474

4

16

88

56%

13

8%

55

35%

495

5

3

86

55%

53

34%

17

11%

447

6

9

85

54%

34

22%

37

24%

462

7

5

72

46%

68

44%

16

10%

376

8

21

70

45%

40

26%

46

29%

396

9

11

56

36%

58

37%

42

27%

322

10

19

56

36%

59

38%

41

26%

321

11

10

54

35%

43

28%

59

38%

329

12

15

54

35%

63

40%

39

25%

309

13

22

50

32%

34

22%

72

46%

322

14

14

46

29%

71

46%

39

25%

269

15

8

45

29%

47

30%

64

41%

289

16

7

43

28%

48

31%

65

42%

280

17

2

33

21%

115

74%

8

5%

173

18

20

32

21%

49

31%

75

48%

235

19

18

29

19%

46

29%

81

52%

226

20

12

28

18%

66

42%

62

40%

202

21

17

28

18%

76

49%

52

33%

192

22

26

25

16%

32

21%

99

63%

224

23

29

25

16%

50

32%

81

52%

206

24

24

24

15%

50

32%

82

53%

202

25

25

23

15%

37

24%

96

62%

211

26

27

20

13%

25

16%

111

71%

211

27

23

19

12%

33

21%

104

67%

199

28

28

19

12%

30

19%

107

69%

202

29

30

11

7%

67

43%

78

50%

133

30

Responses by Question

 

 

# Answered A

# Answered B

# Answered C

# Answered D

#Answered E

1

8

96

7

2

7

2

21

71

33

20

3

3

17

22

86

3

11

4

3

2

4

124

2

5

1

43

13

72

11

6

92

19

10

16

5

7

10

43

19

8

11

8

45

6

7

13

21

9

85

14

6

4

10

10

14

16

54

9

4

11

19

56

4

4

31

12

6

19

30

28

11

13

1

23

11

13

93

14

10

12

46

22

27

15

54

7

7

43

6

16

88

1

5

5

2

17

12

30

24

28

10

18

8

5

17

29

16

19

13

9

56

7

30

20

23

32

11

6

9

21

70

3

8

3

26

22

9

4

50

19

2

23

8

19

8

10

7

24

12

24

18

13

7

25

23

14

10

11

2

26

4

7

25

18

3

27

6

20

3

14

2

28

9

19

7

9

5

29

4

29

25

8

9

30

39

7

14

11

7