Question
I need assistance completing a t-test for specific course data provided by the program in Excel and using https://www.lock5stat.com/StatKey/ Compare the different Genders of subjects
I need assistance completing a t-test for specific course data provided by the program in Excel and using https://www.lock5stat.com/StatKey/
"Compare the different Gendersof subjects in the Psych_Data.xlsx data set to determine if there is a statistically significant difference in the mean Anxiety Scores (anx_score) between the different gender groups. Be sure to state the type of test, state the Ho and Ha, include all relevant Excel results and plots, and write final conclusions for the full results of the test in context. Be sure that your final conclusions are written in common terms for an average person to understand. Include descriptive statistics (mean, standard deviation, sample size) AND an appropriate graphical display that allows you to visually compare the Anxiety Scores for the two gender groups. Copy/paste the numerical summaries and graph here AND describe the similarities and differences in the Anxiety Scores of the two groups (address central tendency and variation of the two groups in your discussion)."
T-test on Excel, needs to be a "t-test: two sample assuming unequal variances" (unless I've assumed incorrectly that I am using an independent samples t-test). I keep getting a spit out from Excel that I am using a non-numeric value (gender). So I swapped male and female to 0 and 1. The results didn't seem correct.
I think I'm on the right track but I am making a serious error somewhere that is causing everything to be wrong.
See data below:
age | gender | ethnicity | dep_scale | anx_score | suicidal_inv | subs_abuse | therapy_pref | ses_level | pre_ther | post_ther | medic |
21 | Male | Asian | 3.9 | 8.3 | 3.8 | none | group | 3 | 38 | 38 | 0 |
21 | Female | AfrAm | 2.7 | 4.4 | 2.3 | narcotics | individual | 2 | 65 | 64 | 1 |
21 | Male | AfrAm | 3.3 | 4.9 | 2.2 | narcotics | individual | 1 | 44 | 46 | 1 |
21 | Male | Hisp | 3.3 | 5.1 | 3.1 | alcohol | individual | 1 | 61 | 63 | 1 |
21 | Female | Hisp | 3.3 | 4.6 | 4.7 | narcotics | individual | 1 | 40 | 40 | 1 |
21 | Female | Hisp | 3.3 | 5.1 | 4.2 | alcohol | mixed | 1 | 49 | 47 | 0 |
21 | Female | Hisp | 3.9 | 5.3 | 3.8 | both | mixed | 3 | 59 | 57 | 1 |
21 | Male | Cauc | 3.4 | 5.1 | 3.4 | narcotics | mixed | 1 | 56 | 58 | 0 |
21 | Male | Cauc | 4.2 | 4.9 | 2.3 | both | mixed | 2 | 59 | 60 | 0 |
22 | Female | Cauc | 3.7 | 6.1 | 4.2 | narcotics | group | 1 | 46 | 44 | 1 |
22 | Female | Asian | 4.5 | 8.1 | 4.7 | none | group | 1 | 51 | 52 | 1 |
22 | Female | Asian | 3.3 | 5.7 | 3.9 | alcohol | group | 1 | 58 | 58 | 1 |
22 | Male | AfrAm | 2.5 | 5.3 | 3.3 | both | group | 1 | 59 | 58 | 1 |
22 | Male | AfrAm | 2.8 | 4.4 | 2.5 | narcotics | group | 1 | 61 | 62 | 0 |
22 | Male | Cauc | 4.2 | 6.7 | 4.3 | both | group | 3 | 49 | 50 | 0 |
22 | Female | AfrAm | 3.6 | 6.3 | 3.7 | none | individual | 2 | 47 | 48 | 0 |
22 | Female | Cauc | 4.1 | 6.9 | 4.5 | both | individual | 3 | 48 | 50 | 0 |
22 | Male | Hisp | 2.9 | 4.5 | 2.8 | both | individual | 1 | 63 | 63 | 1 |
22 | Male | Asian | 3.9 | 6.2 | 4.4 | narcotics | individual | 1 | 43 | 42 | 1 |
22 | Male | Cauc | 4.2 | 6.6 | 4.1 | alcohol | individual | 1 | 41 | 44 | 1 |
22 | Female | Hisp | 3.8 | 5.6 | 4.1 | both | mixed | 1 | 45 | 44 | 0 |
22 | Female | AfrAm | 2.6 | 5.1 | 3.1 | narcotics | mixed | 1 | 48 | 46 | 1 |
22 | Female | Cauc | 4.2 | 7.7 | 4.6 | narcotics | mixed | 1 | 52 | 51 | 1 |
23 | Male | Hisp | 2.5 | 4.4 | 2.5 | alcohol | group | 1 | 59 | 58 | 1 |
23 | Female | Cauc | 3.1 | 5.5 | 3.6 | none | individual | 1 | 63 | 66 | 0 |
23 | Female | Cauc | 3.4 | 5.2 | 3.8 | narcotics | mixed | 1 | 64 | 64 | 1 |
23 | Female | Cauc | 3.9 | 5.7 | 3.9 | alcohol | mixed | 2 | 53 | 55 | 1 |
23 | Male | Asian | 4.1 | 6.3 | 4.1 | both | mixed | 2 | 51 | 50 | 1 |
23 | Male | AmInd | 3.6 | 5.8 | 3.9 | both | mixed | 1 | 50 | 49 | 0 |
24 | Female | AfrAm | 2.9 | 4.8 | 3.3 | alcohol | group | 1 | 54 | 53 | 1 |
24 | Female | AfrAm | 2.6 | 4.9 | 2 | none | group | 1 | 61 | 62 | 1 |
24 | Male | Hisp | 3.5 | 5.4 | 3.8 | both | group | 1 | 55 | 54 | 0 |
24 | Female | Cauc | 4.3 | 7.2 | 4.6 | alcohol | individual | 3 | 41 | 41 | 0 |
24 | Male | Asian | 4.5 | 5.9 | 3.8 | narcotics | individual | 1 | 50 | 51 | 0 |
24 | Male | Cauc | 3.9 | 4.6 | 2.9 | both | individual | 2 | 63 | 65 | 0 |
24 | Male | Hisp | 2.8 | 4.2 | 2.6 | narcotics | individual | 1 | 54 | 52 | 0 |
24 | Male | Cauc | 3.2 | 5.4 | 3.2 | both | mixed | 3 | 57 | 60 | 0 |
25 | Female | Hisp | 3.7 | 5.2 | 4.5 | narcotics | group | 1 | 45 | 45 | 0 |
25 | Male | AfrAm | 3.1 | 5.2 | 3.1 | narcotics | individual | 1 | 62 | 62 | 0 |
25 | Male | Asian | 3.9 | 5.5 | 3.1 | both | individual | 2 | 60 | 59 | 1 |
25 | Male | Hisp | 3.1 | 5.6 | 3.8 | narcotics | individual | 1 | 52 | 52 | 1 |
25 | Female | Asian | 4.6 | 7.2 | 3.8 | alcohol | mixed | 2 | 44 | 44 | 0 |
25 | Male | Hisp | 3.5 | 4.8 | 2.7 | both | mixed | 1 | 63 | 61 | 1 |
26 | Female | AfrAm | 2.9 | 3.4 | 1.8 | both | group | 2 | 57 | 57 | 0 |
26 | Female | AfrAm | 2.8 | 3.8 | 2.7 | alcohol | group | 1 | 59 | 59 | 1 |
26 | Female | Hisp | 3.9 | 4.3 | 3.5 | both | group | 1 | 55 | 55 | 0 |
26 | Male | AfrAm | 2.7 | 4.5 | 2.6 | both | group | 1 | 57 | 55 | 0 |
26 | Male | Hisp | 3.5 | 4.9 | 2.6 | narcotics | individual | 1 | 58 | 57 | 0 |
26 | Male | Cauc | 3.5 | 6.1 | 4.3 | both | individual | 2 | 43 | 40 | 1 |
27 | Female | Hisp | 3.4 | 4.8 | 3.5 | none | group | 2 | 57 | 60 | 1 |
27 | Female | Asian | 4.2 | 7.3 | 4.9 | both | group | 2 | 51 | 53 | 0 |
27 | Female | Asian | 3.4 | 6.1 | 4.5 | narcotics | group | 2 | 44 | 42 | 0 |
27 | Female | Cauc | 4.1 | 6.3 | 4.3 | narcotics | mixed | 1 | 51 | 51 | 0 |
27 | Female | Cauc | 3.6 | 4.2 | 3.5 | alcohol | mixed | 2 | 47 | 46 | 0 |
27 | Male | Cauc | 2.9 | 4.5 | 2.9 | alcohol | mixed | 2 | 63 | 62 | 0 |
28 | Female | Hisp | 3.2 | 6.2 | 3.8 | narcotics | individual | 1 | 55 | 56 | 1 |
28 | Male | Hisp | 4.1 | 6.6 | 4.5 | both | individual | 1 | 41 | 42 | 0 |
28 | Male | Asian | 4.1 | 7.9 | 4.6 | narcotics | mixed | 2 | 47 | 47 | 0 |
28 | Male | AfrAm | 2.9 | 4.2 | 3.4 | narcotics | mixed | 3 | 61 | 60 | 0 |
29 | Female | Hisp | 3.6 | 4.8 | 1.5 | narcotics | group | 1 | 49 | 48 | 0 |
29 | Male | Cauc | 4.2 | 6.3 | 4.4 | narcotics | group | 1 | 56 | 55 | 0 |
29 | Male | Asian | 4.3 | 7.8 | 4.2 | narcotics | group | 1 | 47 | 46 | 1 |
29 | Male | AfrAm | 3.8 | 6.5 | 4.4 | both | group | 1 | 50 | 50 | 1 |
30 | Female | Asian | 4.2 | 6.6 | 4.3 | both | individual | 2 | 37 | 36 | 0 |
30 | Male | AfrAm | 2.6 | 5.1 | 3.9 | none | individual | 1 | 54 | 54 | 0 |
30 | Female | Cauc | 3.5 | 6.1 | 4.3 | alcohol | mixed | 2 | 37 | 39 | 1 |
30 | Female | Hisp | 3.4 | 6.3 | 4.2 | alcohol | mixed | 1 | 52 | 53 | 1 |
30 | Male | Cauc | 2.6 | 6.2 | 2.1 | both | mixed | 1 | 43 | 42 | 0 |
31 | Male | Hisp | 3.8 | 3.7 | 2.2 | both | group | 1 | 58 | 59 | 1 |
31 | Male | AfrAm | 3.1 | 3.7 | 1.6 | both | group | 2 | 62 | 62 | 0 |
31 | Female | AfrAm | 4.1 | 7.1 | 4.3 | none | individual | 2 | 52 | 52 | 0 |
31 | Female | Hisp | 3.6 | 5.8 | 3.7 | alcohol | mixed | 1 | 53 | 53 | 1 |
31 | Male | AfrAm | 3.1 | 3.7 | 1.9 | narcotics | mixed | 3 | 64 | 64 | 0 |
32 | Male | Cauc | 2.5 | 4.9 | 2.7 | narcotics | group | 2 | 41 | 40 | 0 |
32 | Female | Cauc | 4.5 | 5.1 | 4.2 | alcohol | mixed | 2 | 45 | 46 | 0 |
33 | Female | AfrAm | 3.3 | 5.9 | 3.5 | narcotics | group | 2 | 55 | 56 | 1 |
33 | Female | AmInd | 3.5 | 5.8 | 4.1 | none | group | 2 | 48 | 51 | 1 |
33 | Female | Hisp | 2.9 | 4.2 | 2.3 | both | individual | 3 | 46 | 46 | 1 |
33 | Male | Hisp | 3.3 | 4.5 | 2.2 | narcotics | individual | 1 | 51 | 52 | 1 |
33 | Male | Hisp | 2.8 | 4.6 | 2.4 | both | mixed | 2 | 69 | 69 | 1 |
34 | Male | Cauc | 3.1 | 4.8 | 3.7 | none | individual | 2 | 57 | 58 | 1 |
35 | Male | AfrAm | 3.7 | 5.3 | 3.7 | both | mixed | 1 | 61 | 60 | 0 |
36 | Male | AfrAm | 3.5 | 5.8 | 3.7 | alcohol | individual | 3 | 55 | 57 | 0 |
36 | Female | AfrAm | 3.9 | 5.2 | 3.6 | alcohol | mixed | 2 | 63 | 64 | 0 |
37 | Male | Cauc | 3.2 | 4.8 | 2.1 | alcohol | group | 2 | 68 | 69 | 0 |
37 | Male | Cauc | 3.2 | 5.6 | 3.8 | narcotics | mixed | 2 | 59 | 59 | 1 |
38 | Female | Hisp | 3.3 | 4.9 | 2.9 | alcohol | group | 2 | 61 | 62 | 1 |
38 | Female | AfrAm | 4.2 | 6.9 | 4.4 | none | group | 2 | 50 | 51 | 0 |
38 | Male | AfrAm | 3.7 | 5.5 | 3.6 | narcotics | mixed | 2 | 60 | 59 | 0 |
39 | Female | AmInd | 3.5 | 6.7 | 4.1 | none | group | 3 | 49 | 49 | 1 |
39 | Male | Cauc | 3.8 | 6.2 | 4.1 | none | group | 3 | 62 | 60 | 0 |
39 | Male | AfrAm | 3.7 | 5.1 | 2.9 | narcotics | individual | 2 | 65 | 65 | 1 |
40 | Female | Asian | 3.8 | 7.2 | 4.5 | none | individual | 3 | 49 | 51 | 0 |
40 | Male | Asian | 3.3 | 7.4 | 4.6 | alcohol | individual | 2 | 53 | 52 | 0 |
40 | Male | AmInd | 3.4 | 5.8 | 4.1 | alcohol | mixed | 3 | 45 | 45 | 0 |
41 | Female | Cauc | 2.4 | 4.9 | 3.2 | both | individual | 3 | 59 | 59 | 0 |
41 | Male | AfrAm | 3.6 | 4.5 | 3.1 | alcohol | individual | 3 | 42 | 42 | 1 |
41 | Female | Cauc | 3.8 | 5.7 | 3.9 | none | mixed | 3 | 53 | 53 | 1 |
41 | Male | Hisp | 3.4 | 4.6 | 2.4 | none | mixed | 2 | 55 | 55 | 1 |
42 | Female | AmInd | 3.3 | 5.4 | 3.9 | none | group | 3 | 62 | 64 | 1 |
42 | Female | AfrAm | 2.6 | 4.1 | 2.4 | none | group | 3 | 55 | 53 | 1 |
42 | Male | Cauc | 4.1 | 5.3 | 3.9 | none | individual | 3 | 43 | 45 | 0 |
42 | Female | AfrAm | 3.8 | 6.2 | 3.9 | narcotics | mixed | 3 | 58 | 58 | 0 |
42 | Male | AfrAm | 3.3 | 5.5 | 3.7 | alcohol | mixed | 3 | 53 | 53 | 1 |
43 | Female | AfrAm | 2.9 | 4.6 | 3.3 | none | mixed | 2 | 62 | 62 | 1 |
44 | Male | AmInd | 3.9 | 5.9 | 4.2 | alcohol | individual | 2 | 60 | 60 | 1 |
45 | Female | Cauc | 3.6 | 6.8 | 3.9 | alcohol | group | 3 | 53 | 51 | 0 |
45 | Female | Cauc | 3.6 | 7.2 | 4.4 | none | mixed | 3 | 34 | 35 | 1 |
46 | Female | Hisp | 3.7 | 4.4 | 2.8 | none | individual | 2 | 58 | 57 | 1 |
46 | Female | Cauc | 4.1 | 7.5 | 4.4 | none | individual | 3 | 42 | 45 | 1 |
48 | Female | AmInd | 3.7 | 7.5 | 4.3 | alcohol | group | 3 | 53 | 55 | 0 |
50 | Male | Asian | 3.8 | 7.2 | 4.5 | none | individual | 3 | 50 | 52 | 0 |
50 | Female | Cauc | 4.4 | 7.3 | 4.6 | none | mixed | 2 | 49 | 49 | 1 |
50 | Male | AfrAm | 2.8 | 3.2 | 1.6 | none | mixed | 1 | 53 | 52 | 1 |
51 | Female | Cauc | 2.9 | 5.8 | 3.5 | alcohol | individual | 2 | 50 | 51 | 0 |
51 | Female | Hisp | 3.1 | 5.8 | 2.9 | alcohol | individual | 2 | 57 | 55 | 0 |
53 | Female | Hisp | 3.4 | 4.6 | 2.2 | alcohol | individual | 2 | 50 | 51 | 0 |
54 | Male | AmInd | 3.1 | 4.9 | 2.3 | alcohol | group | 3 | 54 | 55 | 1 |
54 | Male | Hisp | 2.8 | 5.2 | 4.1 | none | individual | 2 | 62 | 63 | 0 |
54 | Female | Cauc | 3.7 | 5.9 | 4.3 | alcohol | mixed | 3 | 38 | 40 | 1 |
55 | Male | Hisp | 3.1 | 5.6 | 4.2 | alcohol | individual | 2 | 46 | 45 | 1 |
56 | Female | Cauc | 3.3 | 6.1 | 4.4 | alcohol | individual | 3 | 57 | 58 | 1 |
57 | Male | Cauc | 4.7 | 6.4 | 4.6 | alcohol | group | 3 | 36 | 35 | 0 |
57 | Female | AfrAm | 3.1 | 4.1 | 2.3 | none | individual | 3 | 63 | 63 | 1 |
58 | Female | Cauc | 3.9 | 7.2 | 4.5 | alcohol | individual | 3 | 55 | 54 | 0 |
59 | Female | Cauc | 2.5 | 4.3 | 3.2 | alcohol | group | 3 | 52 | 53 | 0 |
60 | Male | AmInd | 3.5 | 5.1 | 4.1 | alcohol | individual | 2 | 58 | 59 | 0 |
60 | Female | Cauc | 4.1 | 7.3 | 4.7 | alcohol | mixed | 2 | 58 | 60 | 0 |
62 | Male | AfrAm | 3.6 | 6.4 | 4.2 | alcohol | mixed | 3 | 50 | 52 | 1 |
69 | Male | Asian | 4.1 | 7.4 | 4.4 | none | individual | 3 | 40 | 42 | 1 |
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