Error Analysis and Instructional Strategy Adjustment in a Corpus of English Language Learners

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

The first round of action was studied

/	The first round of action research (score rate%)	The first round of action (score rate%)	Fluctuating value
Preposition	58.64%	66.34%	7.70%
Article	66.24%	58.71%	-7.53%
Pronoun	56.48%	82.63%	26.15%
Adjective	65.21%	33.75%	-31.46%
Adverb	86.69%	71.69%	-15.00%
Nouns	54.36%	84.25%	29.89%
Predicate verb	53.21%	57.63%	4.42%
Non-predicate verb	65.97%	53.23%	-12.74%
Coordinate conjunction	67.15%	70.64%	3.49%
Subordinate conjunction	41.36%	41.26%	-0.10%
Average score	6.18	6.23	0.05
Pair difference
Average (post-test)	Standard deviation	Standard error mean	The difference is 95%
0.48%	18.654%	5.8965%	-12.856%
Confidence interval limit	T	Freedom	Significance (double tail)
13.851%	0.0815	10	0.945

The sample mean statistics before writing

Type	Mean value	Case number	Standard deviation	Standard error mean
Simple Sentence	12.1654	50	2.7563	0.3648
Error correction	5.7556	50	2.6466	0.3896
Single Fill	13.6485	50	2.5489	0.3248
Single Sentence Translation	5.9547	50	2.9954	0.3495
Fill In	12.9352	50	2.3964	0.3685
Written Expression	14.9487	50	3.2874	0.3185

The first test of the second round of action and the subsequent test results

/	The first test of the second round of action (score rate%)	After the second round of action (score rate)	Fluctuating value
Preposition	66.45%	76.09%	9.64%
Article	58.73%	86.48%	27.75%
Pronoun	82.63%	88.63%	6.00%
Adjective	33.54%	63.15%	29.61%
Adverb	71.85%	65.05%	-6.80%
Nouns	84.59%	92.38%	7.79%
Predicate verb	57.56%	90.23%	32.67%
Non-predicate verb	53.69%	75.63%	21.94%
Coordinate conjunction	70.65%	71.26%	0.61%
Subordinate conjunction	41.65%	43.42%	1.77%
Average score	6.15	6.69	0.54
Pair difference
Average (post-test)	Standard deviation	Standard error mean	The difference is 95%
13.10%	13.76%	4.43%	3.36%
Confidence interval limit	T	Freedom	Significance (double tail)
22.92%	3.039	9	0.0154

Test volume score

Subject number	Exploratory morphology	Scoring rate	Subject number	Exploratory morphology	Scoring rate
1	Nouns	82.65%	11	Pronoun	34.79%
2	Article	82.65%	12	Verbs	69.36%
3	Article	73.45%	13	Pronoun	78.15%
4	Nouns	26.06%	14	Verbs	21.65%
5	Adverb	85.66%	15	Verbs	69.52%
6	Adjective	65.18%	16	Conjunction	78.23%
7	Article	43.66%	17	Conjunction	78.23%
8	Preposition	56.96%	18	Conjunction	56.58%
9	Preposition	60.83%	19	Verbs	69.15%
10	Verbs	60.84%	20	Conjunction	4.36%

The third round is compared to the rate of score

Subject number	Exploratory morphology	Pretest rate	After score	Rate fluctuation
1	Nouns	82.63%	100%	17.37%
2	Article	82.14%	91.25%	9.11%
3	Article	73.66%	65.26%	-8.40%
4	Nouns	26.06%	60.25%	34.19%
5	Adverb	86.93%	100%	13.07%
6	Adjective	65.23%	86.26%	21.03%
7	Article	43.98%	69.48%	25.50%
8	Preposition	56.31%	69.62%	13.31%
9	Preposition	60.84%	91.26%	30.42%
10	Verbs	60.89%	86.25%	25.36%
11	Pronoun	34.66%	69.15%	34.49%
12	Verbs	69.36%	91.62%	22.26%
13	Pronoun	78.15%	95.43%	17.28%
14	Verbs	21.96%	39.65%	17.69%
15	Verbs	69.26%	86.36%	17.10%
16	Conjunction	78.56%	91.26%	12.70%
17	Conjunction	78.26%	100%	21.74%
18	Conjunction	56.23%	78.26%	22.03%
19	Verbs	69.48%	86.64%	17.16%
20	Conjunction	4.36%	26.97%	22.61%

Test of matching sample t after test and writing

Item		Mean value	Standard deviation
Simple sentence	Post test-Pre test	5.0645	3.4215
Error correction		3.0354	4.0695
Single fill		3.3214	3.8545
Single sentence translation		1.7258	3.1698
Fill in		3.3454	4.6284
Written expression		1.4598	2.3654
Pairing difference
Item	Mean standard error	Difference 95% confidence interval
		Lower limit	Upper limit
Simple sentence	0.5261	4.0069	6.0684
Error correction	0.6598	1.8935	4.2254
Single fill	0.5621	2.1658	4.4825
Single sentence translation	0.4628	0.7985	2.6365
Fill in	0.9156	1.4585	4.2158
Written expression	0.3515	0.7856	2.2365
Item	T	Freedom	Significance (double tail)
Simple sentence	9.7184	45	0.000
Error correction	5.1254	45	0.000
Single fill	5.8596	45	0.000
Single sentence translation	3.7185	45	0.000
Fill in	3.3985	45	0.000
Written expression	4.2615	45	0.000