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KA 2011 December Exercises Data
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<h1>Exercise Data from 2011 December logs</h1>
<p class="meta"> 01 Dec 2011 - 13 Dec 2011 </p>
<h2>Graphs</h2>
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<h2>Raw Data (Thanks Ben Komalo)</h2>
<pre>
Exercise # students Proficiency Rate Avg # to proficiency #right / #total (% right)
corresponding_angles 2708 74.5% 7.0 40263 / 40938 (98.4 %)
alternate_exterior_angles 2156 77.0% 7.4 28582 / 29055 (98.4 %)
alternate_interior_angles 2157 76.4% 7.6 31470 / 32068 (98.1 %)
vertical_angles 3528 74.1% 6.7 51689 / 52764 (98.0 %)
reading_bar_charts_1 18386 55.2% 5.9 110692 / 112971 (98.0 %)
subtraction_1 40531 87.8% 6.4 458810 / 468849 (97.9 %)
multiplication_0.5 41861 88.1% 8.0 656583 / 675613 (97.2 %)
interpreting_linear_equations 2417 67.4% 7.2 28156 / 29074 (96.8 %)
addition_1 70329 78.6% 8.9 1190846 / 1230476 (96.8 %)
angle_types 15739 56.7% 8.4 190260 / 198132 (96.0 %)
number_line_2 60038 61.5% 7.0 412400 / 430214 (95.9 %)
multiplication_1 38951 82.5% 7.9 461929 / 482375 (95.8 %)
multiplication_1.5 28649 77.4% 7.0 237173 / 248653 (95.4 %)
absolute_value 15026 51.2% 9.3 148264 / 155587 (95.3 %)
addition_2 44996 89.1% 6.9 381906 / 401591 (95.1 %)
recognizing_fractions 10830 54.2% 7.6 87604 / 92532 (94.7 %)
reading_line_charts_1 15928 55.1% 6.9 80060 / 84657 (94.6 %)
number_line 77946 58.5% 7.0 503572 / 532220 (94.6 %)
division_0.5 31831 83.3% 7.9 330191 / 350503 (94.2 %)
division_1.5 19345 72.8% 7.7 166148 / 176671 (94.0 %)
division_1 25356 77.6% 7.6 227422 / 242295 (93.9 %)
properties_of_numbers_1 40845 54.1% 7.3 241280 / 258441 (93.4 %)
place_value 24143 51.9% 7.5 130627 / 139908 (93.4 %)
subtraction_2 35388 76.0% 7.3 233377 / 250356 (93.2 %)
reading_tables_1 33540 54.5% 7.8 178673 / 191918 (93.1 %)
converting_decimals_to_fractions_1 4390 75.0% 7.8 33523 / 36004 (93.1 %)
recognizing_fractions_0.5 14088 57.3% 8.0 83139 / 89984 (92.4 %)
parabola_intuition_1 2073 45.5% 6.1 8048 / 8736 (92.1 %)
converting_percents_to_decimals 3129 63.3% 8.5 22262 / 24184 (92.1 %)
ordering_negative_numbers 10125 58.6% 8.4 66763 / 72597 (92.0 %)
inscribed_angles_2 735 55.6% 8.1 4224 / 4608 (91.7 %)
complementary_and_supplementary_angles 4858 56.7% 8.1 27320 / 29969 (91.2 %)
understanding_decimals_place_value 25795 84.4% 8.1 191506 / 211011 (90.8 %)
inscribed_angles_3 727 54.2% 7.5 3743 / 4122 (90.8 %)
same_side_exterior_angles 1460 81.0% 7.6 9740 / 10750 (90.6 %)
line_graph_intuition 4107 49.7% 7.3 21215 / 23410 (90.6 %)
telling_time_0.5 29054 55.1% 8.9 175083 / 193380 (90.5 %)
distributive_property 18404 51.3% 8.6 98407 / 108967 (90.3 %)
dividing_decimals_2 3410 75.0% 8.0 21590 / 23946 (90.2 %)
dividing_decimals 4473 48.8% 7.0 19058 / 21156 (90.1 %)
recognizing_rays_lines_and_line_segments 25102 59.6% 12.1 316396 / 351724 (90.0 %)
complementary_angles 5246 71.4% 8.1 34364 / 38185 (90.0 %)
supplementary_angles 4150 74.4% 8.0 26914 / 29951 (89.9 %)
subtracting_fractions_with_common_denominators 6932 64.2% 9.5 48873 / 54563 (89.6 %)
division_2 16226 59.9% 7.7 90240 / 101130 (89.2 %)
equivalent_fractions 8525 59.0% 8.1 57293 / 64334 (89.1 %)
equation_of_a_circle_1 868 57.3% 8.3 4947 / 5559 (89.0 %)
addition_4 32259 66.9% 9.0 223033 / 251833 (88.6 %)
recognizing_conic_sections 16294 57.1% 16.5 268993 / 304072 (88.5 %)
fractions_cut_and_copy_2 1880 43.8% 8.2 8037 / 9083 (88.5 %)
division_4 7325 55.8% 7.2 34902 / 39485 (88.4 %)
addition_3 41255 73.6% 9.0 309444 / 350350 (88.3 %)
multiplying_and_dividing_negative_numbers 8109 67.9% 10.7 74488 / 84510 (88.1 %)
axis_of_symmetry 15560 60.6% 13.5 184777 / 209847 (88.1 %)
rate_problems_0.5 2780 52.4% 8.0 14353 / 16319 (88.0 %)
dividing_decimals_1 5642 62.9% 7.7 31194 / 35502 (87.9 %)
converting_decimals_to_percents 4430 61.7% 11.2 36292 / 41309 (87.9 %)
one_step_equations_0.5 5376 79.3% 9.8 52027 / 59226 (87.8 %)
logarithms_1 3564 53.7% 10.3 25735 / 29330 (87.7 %)
subtraction_3 24239 65.8% 9.0 158909 / 181561 (87.5 %)
properties_of_numbers_2 25500 48.2% 12.3 170509 / 195317 (87.3 %)
adding_and_subtracting_decimals_word_problems 12218 80.1% 9.4 96865 / 111034 (87.2 %)
special_derivatives 1219 69.0% 9.4 10449 / 12025 (86.9 %)
functions_1 3742 56.5% 9.4 23662 / 27236 (86.9 %)
equivalent_fractions_2 7616 49.7% 9.3 43599 / 50152 (86.9 %)
adding_negative_numbers 31369 54.7% 10.6 237914 / 273663 (86.9 %)
multiplication_2 26415 62.7% 9.7 189079 / 217857 (86.8 %)
subtraction_4 18359 62.6% 9.4 119324 / 137723 (86.6 %)
arithmetic_word_problems_2 22673 50.5% 10.4 137003 / 158310 (86.5 %)
adding_vectors 1214 42.2% 8.7 5546 / 6418 (86.4 %)
adding_decimals 32737 46.0% 9.8 178392 / 206769 (86.3 %)
subtracting_decimals 17431 45.6% 9.9 92908 / 108079 (86.0 %)
systems_of_equations_with_elimination 435 69.2% 7.5 2362 / 2752 (85.8 %)
reading_tables_2 24947 47.1% 9.6 134296 / 156518 (85.8 %)
graphing_points 9016 48.4% 8.6 47765 / 55651 (85.8 %)
telling_time 23030 48.3% 11.5 148661 / 173472 (85.7 %)
exploring_mean_and_median 3936 37.8% 8.2 15281 / 17829 (85.7 %)
same_side_interior_angles 1893 70.2% 9.9 13381 / 15712 (85.2 %)
comparing_fractions_1 5348 54.7% 9.3 35018 / 41214 (85.0 %)
multiplying_radicals 1962 50.3% 10.7 11865 / 13974 (84.9 %)
multiplication_4 12754 56.0% 9.3 78365 / 92268 (84.9 %)
radians_and_degrees 1382 51.3% 8.3 6923 / 8184 (84.6 %)
expressing_ratios_as_fractions 5086 53.3% 10.8 33839 / 40112 (84.4 %)
evaluating_expressions_1 3376 53.5% 10.3 22311 / 26517 (84.1 %)
systems_of_equations_with_elimination_0.5 604 69.2% 9.0 3899 / 4642 (84.0 %)
logarithms_2 2730 56.8% 15.5 25616 / 30519 (83.9 %)
equation_of_an_ellipse 552 47.6% 11.2 3377 / 4030 (83.8 %)
greatest_common_divisor 8429 49.5% 13.3 65392 / 78388 (83.4 %)
rounding_whole_numbers 17869 48.2% 12.5 119197 / 143167 (83.3 %)
congruent_triangles_1 2058 56.8% 16.5 21083 / 25296 (83.3 %)
parallel_lines_1 3510 48.2% 13.2 27559 / 33104 (83.2 %)
divisibility_0.5 5475 49.8% 8.3 30855 / 37094 (83.2 %)
exponents_4 3183 48.6% 12.0 20391 / 24527 (83.1 %)
writing_expressions_2 2088 45.7% 10.3 11058 / 13328 (83.0 %)
arithmetic_word_problems 1168 41.4% 8.8 5172 / 6245 (82.8 %)
parabola_intuition_2 1111 32.7% 9.6 4020 / 4859 (82.7 %)
converting_mixed_numbers_and_improper_fractions 3856 43.7% 10.4 20870 / 25276 (82.6 %)
congruent_triangles_2 1482 51.6% 13.1 11129 / 13466 (82.6 %)
adding_fractions_with_common_denominators 11292 51.2% 14.1 93350 / 113184 (82.5 %)
converting_repeating_decimals_to_fractions_1 2182 42.4% 13.2 13293 / 16227 (81.9 %)
inscribed_angles_1 1252 39.7% 11.7 6659 / 8141 (81.8 %)
exponents_3 4657 47.6% 13.0 32272 / 39469 (81.8 %)
derivatives_1 1726 48.7% 10.0 9260 / 11318 (81.8 %)
adding_and_subtracting_radicals 2313 45.7% 13.5 15047 / 18404 (81.8 %)
new_definitions_2 614 40.4% 13.8 3618 / 4426 (81.7 %)
multiplying_decimals 10963 38.2% 9.9 51855 / 63456 (81.7 %)
multiplying_polynomials 1649 46.5% 10.2 9336 / 11444 (81.6 %)
comparing_absolute_values 11868 51.1% 16.0 116591 / 142930 (81.6 %)
arithmetic_word_problems_1 36665 43.9% 11.6 241529 / 296086 (81.6 %)
solving_for_the_x-intercept 2066 51.6% 13.4 15196 / 18658 (81.4 %)
quadrilateral_angles 2074 46.9% 13.8 15122 / 18587 (81.4 %)
measuring_angles 26502 42.7% 9.6 135380 / 167193 (81.0 %)
power_rule 1169 52.9% 7.7 5410 / 6685 (80.9 %)
multiplication_3 16456 48.3% 10.6 98316 / 121510 (80.9 %)
derivative_intuition 1832 40.4% 9.1 8276 / 10237 (80.8 %)
converting_decimals_to_fractions_2 3793 46.5% 13.5 26595 / 32906 (80.8 %)
comparing_fractions_2 4160 51.5% 12.4 31239 / 38650 (80.8 %)
triangle_angles_1 3412 43.9% 12.7 20910 / 26009 (80.4 %)
rounding_numbers 13661 41.4% 13.6 85870 / 107248 (80.1 %)
triangle_types 6015 55.6% 20.9 75388 / 94286 (80.0 %)
product_rule 1336 56.1% 9.4 7741 / 9673 (80.0 %)
plugging_in_values 1901 43.1% 10.5 9764 / 12213 (79.9 %)
counting_1 20474 43.5% 17.6 156781 / 196391 (79.8 %)
new_definitions_1 978 44.5% 12.6 5528 / 6935 (79.7 %)
fractions_cut_and_copy_1 3223 37.1% 13.9 18995 / 23871 (79.6 %)
counting_2 12956 46.0% 18.9 112396 / 141682 (79.3 %)
arithmetic_challenge 15653 17.5% 46.5 162895 / 205340 (79.3 %)
evaluating_expressions_2 2407 44.5% 13.0 16686 / 21068 (79.2 %)
estimation_with_decimals 7443 43.8% 13.3 48409 / 61169 (79.1 %)
vertical_angles_2 2859 52.6% 10.9 17409 / 22032 (79.0 %)
lhopitals_rule 885 50.7% 15.6 7736 / 9796 (79.0 %)
scientific_notation 4799 43.7% 14.7 33767 / 42816 (78.9 %)
equation_of_a_circle_2 432 42.1% 10.6 2075 / 2632 (78.8 %)
trigonometry_2 1279 50.7% 14.3 9862 / 12527 (78.7 %)
quotient_rule 1235 48.2% 13.4 8284 / 10525 (78.7 %)
linear_equations_1 7002 56.8% 17.0 73030 / 92840 (78.7 %)
dividing_fractions 5843 39.7% 14.5 39264 / 49881 (78.7 %)
division_3 11728 43.3% 13.1 74905 / 95845 (78.2 %)
systems_of_equations_with_substitution 754 52.4% 9.8 4394 / 5625 (78.1 %)
adding_subtracting_mixed_numbers_1 2572 35.3% 12.8 13753 / 17601 (78.1 %)
simplifying_fractions 8891 37.4% 13.5 53852 / 68997 (78.0 %)
linear_equations_2 5352 56.8% 15.9 51759 / 66352 (78.0 %)
expressions_with_unknown_variables_2 610 32.3% 9.3 2137 / 2739 (78.0 %)
triangle_inequality_theorem 1339 36.0% 15.1 8180 / 10499 (77.9 %)
one_step_equations 6301 46.8% 12.9 48066 / 61843 (77.7 %)
inequalities_on_a_number_line 4826 45.3% 14.5 35555 / 45844 (77.6 %)
negative_number_word_problems 8905 37.8% 18.0 65489 / 84608 (77.4 %)
average_word_problems 1355 34.5% 9.2 5224 / 6747 (77.4 %)
unit_circle 1976 41.5% 15.4 13718 / 17776 (77.2 %)
angles_2 3552 35.6% 14.0 20158 / 26182 (77.0 %)
significant_figures_1 14249 46.2% 25.6 170127 / 221641 (76.8 %)
prime_factorization 9596 42.2% 18.7 80667 / 105023 (76.8 %)
number_line_3 56081 45.0% 17.0 465247 / 605651 (76.8 %)
functions_2 2188 36.9% 14.9 13370 / 17419 (76.8 %)
pre-algebra_challenge 10749 10.2% 96.0 143474 / 186963 (76.7 %)
least_common_multiple 6109 42.0% 14.5 41663 / 54287 (76.7 %)
fraction_word_problems_1 8342 34.7% 16.1 55169 / 71907 (76.7 %)
exponent_rules 5370 46.8% 20.7 55062 / 71927 (76.6 %)
percentage_word_problems_2 914 34.1% 17.0 5224 / 6827 (76.5 %)
graphing_systems_of_inequalities_2 386 51.0% 19.2 3620 / 4731 (76.5 %)
exponents_2 6823 52.6% 17.6 64607 / 84438 (76.5 %)
subtracting_fractions 6599 36.1% 14.6 40184 / 52595 (76.4 %)
order_of_operations 11751 36.4% 18.1 96414 / 126168 (76.4 %)
congruency_postulates 2007 30.5% 19.3 14702 / 19267 (76.3 %)
expressions_with_unknown_variables 604 37.1% 9.7 2430 / 3189 (76.2 %)
dependent_probability 1017 34.2% 16.3 5759 / 7558 (76.2 %)
linear_inequalities 2118 38.1% 14.6 13235 / 17397 (76.1 %)
scaling_vectors 814 35.9% 11.5 4065 / 5354 (75.9 %)
graphs_of_sine_and_cosine 1502 42.5% 17.3 11198 / 14747 (75.9 %)
exponents_1 12087 49.6% 19.3 133257 / 175466 (75.9 %)
radical_equations 1281 36.2% 10.6 5970 / 7881 (75.8 %)
domain_and_range_0.5 2033 45.7% 17.4 16732 / 22110 (75.7 %)
limits_1 3601 41.3% 16.1 28150 / 37229 (75.6 %)
writing_expressions_1 7830 47.5% 14.4 63232 / 83881 (75.4 %)
mean_median_and_mode 4477 29.6% 17.7 29579 / 39250 (75.4 %)
multiplying_expressions_1 1878 40.3% 13.3 11597 / 15396 (75.3 %)
midpoint_formula 1412 35.6% 18.8 9338 / 12399 (75.3 %)
adding_and_subtracting_negative_numbers 19676 46.2% 17.3 197831 / 262953 (75.2 %)
point_slope_form 988 46.7% 16.1 7377 / 9832 (75.0 %)
ratio_word_problems 9802 34.2% 12.6 50323 / 67168 (74.9 %)
rate_problems_2 489 32.1% 13.3 2240 / 2997 (74.7 %)
angles_of_a_polygon 2064 38.9% 16.0 14085 / 18850 (74.7 %)
solving_quadratics_by_factoring 2041 42.1% 12.8 12171 / 16313 (74.6 %)
multiplying_fractions 6770 42.1% 16.9 56746 / 76184 (74.5 %)
completing_the_square_2 858 33.7% 13.8 4238 / 5686 (74.5 %)
absolute_value_equations 1809 35.9% 8.9 7726 / 10390 (74.4 %)
prime_numbers 16800 38.6% 18.2 142439 / 192807 (73.9 %)
even_and_odd_functions 1560 39.4% 24.1 18630 / 25194 (73.9 %)
similar_triangles_1 2481 44.9% 16.9 22099 / 29964 (73.8 %)
range_of_a_function 542 38.6% 18.2 3801 / 5152 (73.8 %)
adding_fractions 7647 29.8% 14.4 39630 / 53690 (73.8 %)
inverse_trig_functions 996 39.0% 26.5 9818 / 13344 (73.6 %)
trigonometry_challenge 3438 5.9% 83.7 22077 / 30043 (73.5 %)
angles_1 7475 33.3% 14.2 38932 / 52986 (73.5 %)
equation_of_a_hyperbola 539 29.3% 18.0 2763 / 3763 (73.4 %)
converting_repeating_decimals_to_fractions_2 1238 31.6% 19.7 8150 / 11110 (73.4 %)
linear_equations_3 6024 44.7% 16.5 50276 / 68600 (73.3 %)
inverses_of_functions 1078 36.8% 12.9 5995 / 8207 (73.0 %)
distance_formula 1934 33.7% 18.1 12963 / 17756 (73.0 %)
adding_and_subtracting_fractions 5124 31.6% 16.3 30114 / 41266 (73.0 %)
quadrilateral_types 4231 42.6% 34.2 66432 / 91540 (72.6 %)
ordering_numbers 4309 30.6% 11.7 19358 / 26734 (72.4 %)
one_step_inequalities 3636 35.6% 18.5 25478 / 35299 (72.2 %)
trigonometry_1 2319 46.4% 15.4 18760 / 26004 (72.1 %)
herons_formula 830 25.7% 15.2 3358 / 4658 (72.1 %)
angle_bisector_theorem 740 25.7% 14.7 3032 / 4225 (71.8 %)
solid_geometry 3914 27.1% 22.0 24937 / 34768 (71.7 %)
graphing_systems_of_equations 1514 30.2% 14.5 7629 / 10642 (71.7 %)
completing_the_square_1 1890 34.6% 15.5 10980 / 15325 (71.6 %)
pythagorean_theorem_2 1405 35.5% 19.3 10069 / 14074 (71.5 %)
graphing_systems_of_inequalities 1037 30.4% 19.2 6279 / 8783 (71.5 %)
graphing_points_2 5151 36.1% 11.8 27342 / 38363 (71.3 %)
parallel_lines_2 2342 35.0% 12.8 11315 / 15903 (71.2 %)
geometry_1 6415 28.7% 18.6 40338 / 56677 (71.2 %)
simplifying_radicals 4745 40.6% 21.8 42488 / 59762 (71.1 %)
graphing_inequalities_2 1052 36.7% 23.4 9150 / 12865 (71.1 %)
algebra_challenge 5469 2.5% 159.3 36496 / 51623 (70.7 %)
converting_fractions_to_decimals 4307 33.6% 13.9 22335 / 31662 (70.5 %)
pythagorean_theorem_1 3289 33.6% 16.3 20889 / 29651 (70.4 %)
compound_inequalities 2052 34.6% 24.7 19876 / 28224 (70.4 %)
limits_2 1924 41.0% 28.8 22531 / 32187 (70.0 %)
ordering_fractions 6630 27.7% 16.5 39192 / 56362 (69.5 %)
equation_of_a_line 1967 29.0% 19.1 12123 / 17477 (69.4 %)
functions_3 1009 26.0% 23.2 6924 / 9989 (69.3 %)
adding_and_subtracting_polynomials 2351 38.7% 12.4 14890 / 21587 (69.0 %)
writing_proportions 3860 38.7% 20.5 31221 / 45554 (68.5 %)
solutions_to_systems_of_equations 540 68.5% 12.9 5042 / 7359 (68.5 %)
trig_identities_1 1237 28.3% 16.9 7476 / 10925 (68.4 %)
quadratic_equation 1596 31.1% 19.1 11086 / 16237 (68.3 %)
slope_of_a_line 6532 31.0% 25.4 61682 / 90462 (68.2 %)
graphing_linear_equations 3545 32.4% 19.3 27419 / 40242 (68.1 %)
domain_of_a_function 1222 29.6% 27.7 10570 / 15528 (68.1 %)
linear_equations_4 4303 28.0% 24.4 35064 / 51635 (67.9 %)
divisibility 3342 26.2% 15.6 18350 / 27030 (67.9 %)
units 4761 20.4% 27.0 27893 / 42006 (66.4 %)
shifting_and_reflecting_functions 992 30.0% 25.3 7231 / 10888 (66.4 %)
probability_1 4322 19.9% 23.8 27616 / 41705 (66.2 %)
solving_for_the_y-intercept 2615 28.9% 23.0 19143 / 29189 (65.6 %)
parabola_intuition_3 486 16.3% 20.0 1544 / 2352 (65.6 %)
distributive_property_with_variables 2964 36.3% 19.6 25949 / 39576 (65.6 %)
converting_between_slope_intercept_and_standard_form 2247 27.1% 20.9 14583 / 22468 (64.9 %)
kinematic_equations 475 15.8% 22.3 1841 / 2881 (63.9 %)
radians_to_degrees 2124 43.0% 9.1 10615 / 16664 (63.7 %)
degrees_to_radians 3490 34.3% 12.4 18129 / 28555 (63.5 %)
graphing_inequalities 2228 22.6% 27.1 15358 / 24576 (62.5 %)
line_relationships 1573 23.8% 27.2 10696 / 17132 (62.4 %)
solving_for_a_variable 1465 20.5% 17.4 6986 / 11588 (60.3 %)
systems_of_equations 2555 16.0% 20.5 10412 / 17476 (59.6 %)
rate_problems_1 1225 14.2% 18.2 3495 / 5865 (59.6 %)
direct_and_inverse_variation 1452 25.2% 20.9 8155 / 13926 (58.6 %)
percentage_word_problems_1 4163 17.4% 33.3 25078 / 42975 (58.4 %)
age_word_problems 1793 14.1% 13.2 5045 / 9327 (54.1 %)
chain_rule_1 6640 15.0% 13.8 19453 / 38138 (51.0 %)
</pre>
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