stdClass Object ( [187] => stdClass Object ( [qid] => 187 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 1 [timestamp] => 1547101527 [score] => 0 ) [217] => stdClass Object ( [qid] => 217 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 2 [timestamp] => 1547101529 [score] => 1 ) [425] => stdClass Object ( [qid] => 425 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 3 [timestamp] => 1547101533 [score] => 2 ) [427] => stdClass Object ( [qid] => 427 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 4 [timestamp] => 1547101544 [score] => 3 ) [428] => stdClass Object ( [qid] => 428 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 5 [timestamp] => 1547101589 [score] => 4 ) [500] => stdClass Object ( [qid] => 500 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 6 [timestamp] => 1547101627 [score] => 4 ) [743] => stdClass Object ( [qid] => 743 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 7 [timestamp] => 1547102271 [score] => 5 ) [744] => stdClass Object ( [qid] => 744 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 8 [timestamp] => 1547102321 [score] => 5 ) [1481] => stdClass Object ( [qid] => 1481 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 9 [timestamp] => 1547102385 [score] => 6 ) [1529] => stdClass Object ( [qid] => 1529 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 10 [timestamp] => 1547102478 [score] => 7 ) [1625] => stdClass Object ( [qid] => 1625 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 11 [timestamp] => 1547102531 [score] => 8 ) [1626] => stdClass Object ( [qid] => 1626 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 12 [timestamp] => 1547102622 [score] => 9 ) [1627] => stdClass Object ( [qid] => 1627 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 13 [timestamp] => 1547102755 [score] => 10 ) [1811] => stdClass Object ( [qid] => 1811 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 14 [timestamp] => 1547102897 [score] => 11 ) [2227] => stdClass Object ( [qid] => 2227 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 15 [timestamp] => 1547102925 [score] => 12 ) [2228] => stdClass Object ( [qid] => 2228 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 16 [timestamp] => 1547102986 [score] => 13 ) [2667] => stdClass Object ( [qid] => 2667 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 17 [timestamp] => 1547103090 [score] => 14 ) [2668] => stdClass Object ( [qid] => 2668 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 18 [timestamp] => 1547103190 [score] => 15 ) [2815] => stdClass Object ( [qid] => 2815 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 19 [timestamp] => 1547103401 [score] => 15 ) [2816] => stdClass Object ( [qid] => 2816 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 20 [timestamp] => 1547103437 [score] => 16 ) [2833] => stdClass Object ( [qid] => 2833 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 21 [timestamp] => 1547103506 [score] => 17 ) [2834] => stdClass Object ( [qid] => 2834 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 22 [timestamp] => 1547103550 [score] => 17 ) [3077] => stdClass Object ( [qid] => 3077 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 23 [timestamp] => 1547103669 [score] => 18 ) [3133] => stdClass Object ( [qid] => 3133 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 24 [timestamp] => 1547103819 [score] => 19 ) [3134] => stdClass Object ( [qid] => 3134 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 25 [timestamp] => 1547104007 [score] => 19 ) [3417] => stdClass Object ( [qid] => 3417 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 26 [timestamp] => 1547104125 [score] => 20 ) [3418] => stdClass Object ( [qid] => 3418 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 27 [timestamp] => 1547104246 [score] => 21 ) [3648] => stdClass Object ( [qid] => 3648 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 28 [timestamp] => 1547104313 [score] => 21 ) [3755] => stdClass Object ( [qid] => 3755 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 29 [timestamp] => 1547104653 [score] => 21 ) [3756] => stdClass Object ( [qid] => 3756 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 30 [timestamp] => 1547104867 [score] => 22 ) [3934] => stdClass Object ( [qid] => 3934 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 31 [timestamp] => 1547105051 [score] => 23 ) [5316] => stdClass Object ( [qid] => 5316 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 32 [timestamp] => 1547105071 [score] => 24 ) [5317] => stdClass Object ( [qid] => 5317 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 33 [timestamp] => 1547105232 [score] => 24 ) [5318] => stdClass Object ( [qid] => 5318 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 34 [timestamp] => 1547105288 [score] => 25 ) [11487] => stdClass Object ( [qid] => 11487 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 35 [timestamp] => 1547105499 [score] => 26 ) [11490] => stdClass Object ( [qid] => 11490 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 36 [timestamp] => 1547105567 [score] => 26 ) [11491] => stdClass Object ( [qid] => 11491 [difficulty] => [discrimination] => [distraction] => [guessing] => [questiontheta] => [questionlexilelevel] => [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 37 [timestamp] => 1547105638 [score] => 26 ) [q828] => stdClass Object ( [qid] => q828 [difficulty] => 0.92 [discrimination] => 0.435165995 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => -2.52 [questionlexilelevel] => 580 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 38 [timestamp] => 1547105656 [score] => 27 ) [q665] => stdClass Object ( [qid] => q665 [difficulty] => 0.73006135 [discrimination] => 0.459998973 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => -1.38 [questionlexilelevel] => 770 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 39 [timestamp] => 1547105687 [score] => 28 ) [q781] => stdClass Object ( [qid] => q781 [difficulty] => 0.581818182 [discrimination] => 0.480683701 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => -0.48 [questionlexilelevel] => 920 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 40 [timestamp] => 1547105727 [score] => 29 ) [q842] => stdClass Object ( [qid] => q842 [difficulty] => 0.471544715 [discrimination] => 0.321018847 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 0.18 [questionlexilelevel] => 1030 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 41 [timestamp] => 1547105749 [score] => 30 ) [q460] => stdClass Object ( [qid] => q460 [difficulty] => 0.3953488372093 [discrimination] => 0.24815621036314 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 0.6 [questionlexilelevel] => 289 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 42 [timestamp] => 1547105810 [score] => 31 ) [q1140] => stdClass Object ( [qid] => q1140 [difficulty] => 0.305389222 [discrimination] => 0.313286086 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 1.2 [questionlexilelevel] => 1200 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 43 [timestamp] => 1547105929 [score] => 32 ) [q1117] => stdClass Object ( [qid] => q1117 [difficulty] => 0.235 [discrimination] => 0.232488779 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 1.62 [questionlexilelevel] => 1270 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 44 [timestamp] => 1547106029 [score] => 32 ) [q1031] => stdClass Object ( [qid] => q1031 [difficulty] => 0.239520958 [discrimination] => 0.074744387 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 1.62 [questionlexilelevel] => 1270 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 45 [timestamp] => 1547106070 [score] => 32 ) [q169] => stdClass Object ( [qid] => q169 [difficulty] => 0.215 [discrimination] => 0.146673803 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 1.74 [questionlexilelevel] => 1290 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 46 [timestamp] => 1547106293 [score] => 33 ) [q776] => stdClass Object ( [qid] => q776 [difficulty] => 0.20348837209302 [discrimination] => 0.28168070247296 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 1.8 [questionlexilelevel] => 409 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 47 [timestamp] => 1547106384 [score] => 33 ) [q69] => stdClass Object ( [qid] => q69 [difficulty] => 0.17 [discrimination] => 0.068567075 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 1.98 [questionlexilelevel] => 1330 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 48 [timestamp] => 1547106665 [score] => 33 ) [q340] => stdClass Object ( [qid] => q340 [difficulty] => 0.157575758 [discrimination] => 0.066579506 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.1 [questionlexilelevel] => 1350 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 49 [timestamp] => 1547106759 [score] => 33 ) [q110] => stdClass Object ( [qid] => q110 [difficulty] => 0.14 [discrimination] => 0.10322170897148 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.16 [questionlexilelevel] => 422 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 50 [timestamp] => 1547106873 [score] => 33 ) [q1139] => stdClass Object ( [qid] => q1139 [difficulty] => 0.105 [discrimination] => -0.042055966 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.4 [questionlexilelevel] => 1400 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 51 [timestamp] => 1547107174 [score] => 33 ) [q1107] => stdClass Object ( [qid] => q1107 [difficulty] => 0.105555556 [discrimination] => -0.026814634 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.4 [questionlexilelevel] => 1400 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 52 [timestamp] => 1547107572 [score] => 33 ) [q96] => stdClass Object ( [qid] => q96 [difficulty] => 0.099236641221374 [discrimination] => 0.12317190398733 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.46 [questionlexilelevel] => 430 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 53 [timestamp] => 1547107649 [score] => 33 ) [q1163] => stdClass Object ( [qid] => q1163 [difficulty] => 0.071856287 [discrimination] => -0.05001497 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.58 [questionlexilelevel] => 1430 [answer] => 0 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 54 [timestamp] => 1547107690 [score] => 33 ) [q14] => stdClass Object ( [qid] => q14 [difficulty] => 0.014285714 [discrimination] => 0.039343675 [distraction] => 1.702 [guessing] => 0.25 [questiontheta] => 2.94 [questionlexilelevel] => 1490 [answer] => 1 [lexile] => [SEM] => NaN [lexileDifference] => [question_number] => 55 [timestamp] => 1547107762 [score] => 33 ) ) end