Sheet1 Right arm:Left arm: SexAgeAngle (°)Angle (°) Individual 1F221118 Individual 2F471416 Individual 3F211415 Individual 4F221316 Individual 5M19911 Individual 6F201615...

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Sheet1 Right arm:Left arm: SexAgeAngle (°)Angle (°) Individual 1F221118 Individual 2F471416 Individual 3F211415 Individual 4F221316 Individual 5M19911 Individual 6F201615 Individual 7F211415 Individual 8M151012 Individual 9F501415 Individual 10F481216 Individual 11M6855 Individual 12M5665 Individual 13F182015 Individual 14M201010 Individual 15M481010 Individual 16F481010 Individual 17F1255 Individual 18F181010 Individual 19F201010 Individual 20M2088 Individual 21M20109 Individual 22F651518 Individual 23F222018 Individual 24M151615 Individual 25F2198 Individual 26M521310 Individual 27F321110 Individual 28M421313 Individual 29F27109 Individual 30F22810 Individual 31M391112 Individual 32F30911 Individual 33M20911 Individual 34F20118 Individual 35M55109 Individual 36M21109 Individual 37M541210 Individual 38F46910 Individual 39M2213 Individual 40F202021 Individual 41M202326 Individual 42M201820 Individual 43F20 Individual 44M18129 Individual 45F201314 Individual 46M21910 Individual 47M301110 Individual 48F321415 Individual 49F202016 Individual 50M1778 Individual 51F201719 Individual 52F142313 Individual 53M211313 Individual 54F211117 Individual 55F181718 Individual 56F20109 Individual 57F301011 Individual 58F281214 Individual 59F1056 Individual 60F1277 Individual 61M2085 Individual 62F241417 Individual 63M19109 Individual 64F221210 Individual 65F27108 Individual 66F1767 Individual 67M5506 Individual 68F2020 Individual 69F5183 Individual 70M221010 Individual 71M5787 Individual 72F561315 Individual 73F181212 Individual 74F201010 Individual 75M2288 Individual 76F491212 Individual 77F451012 Individual 78F211515 Individual 79F201010 Individual 80F482019 Individual 81F152018 Individual 82M541720 Individual 83M211010 Individual 84F211013 Individual 85M651214 Individual 86F2288 Individual 87F201012 Individual 88F621415 Individual 89F211513 Individual 90F511816 Individual 91F242120 Individual 92F7957 Individual 93M542125 Individual 94F571416 Individual 95M3087 Individual 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142Trans M263025 Individual 143F222015 Individual 144F222020 Individual 145M222220 Individual 146M211517 Individual 147F262123 Individual 148F212422 Individual 149M381012 Individual 150M451311 Individual 151M221214 Individual 152F191518 Individual 153F191715 Individual 154F501920 Individual 155M53911 Individual 156M221111 Individual 157M21910 Individual 158M2179 Individual 159F201213 Individual 160F231615 Individual 161F531616 Individual 162M201211 Individual 163F33230 Individual 164F53632 Individual 165F212423 Individual 166F211515 Individual 167F561618 Individual 168F211010 Individual 169F221111 Individual 170M251313 Individual 171F201210 Individual 172F541614 Individual 173F23108 Individual 174M261111 Individual 175F301211 Individual 176M701820 Individual 177F671114 Individual 178M60109 Individual 179M241512 Individual 180M19119 Individual 181F571215 Individual 182F221719 Individual 183F201514 Individual 184F2015 Individual 185F201116 Individual 186M23911 Individual 187F551210 Individual 188F201314 Individual 189M582328 Individual 190F571211 Individual 191M1917 Individual 192F211514 Individual 193F211514 Individual 194M511817 Individual 195F181315 Individual 196M19810 Individual 197M24911 Individual 198F541516 Individual 199M201010 Individual 200F211414 Individual 201M6565 Individual 202F867 Individual 203F8911 Individual 204F91113 Individual 205M81112 Individual 206M101213 Individual 207M1298 Individual 208F 779 Individual 209M Individual 210M Individual 211F2112.515 Individual 212F601213 Individual 213M2176 Individual 214M1865 Individual 215F211416 Individual 216M251719 Individual 217F551314 Individual 218F202025 Individual 219M491510 Individual 220F512020 Individual 221M461611 Individual 222M211416 Individual 223M191415 Individual 224F582018 Individual 225F451511 Individual 226M9139 Individual 227F211114 Individual 228M201315 Individual 229F181513 Individual 230F181714 Individual 231F181415 Individual 232F201617 Individual 233F231415 Individual 234M181716 Individual 235 Individual 236M201111 Individual 237M551312 Individual 238F22910 Individual 239F501112 Individual 240F24911 Individual 241F48159 Individual 242F202020 Individual 243F211013 Individual 244M251317 Individual 245M201720 Individual 246F201012 Individual 247F181313 Individual 248M2298 Individual 249F501415 Individual 250M5978 Individual 251F201317 Individual 252F471815 Individual 253F561411 Individual 254M521210 Individual 255M231014 Individual 256F131520 Individual 257M552520 Individual 258F481510 Individual 259M291210 Individual 260F211312 Individual 261F93030 Individual 262F432030 Individual 263F143530 Individual 264M4155 Individual 265M591517 Individual 266M202019 Individual 267M172120 Individual 268F201011 Individual 269F46910 Individual 270M1879 Individual 271M522524 Individual 273F202019 Individual 274F502521 Individual 275M181411 Individual 276F161411 Individual 277F63911 Individual 278F201315 Individual 279M591213 Individual 280F2214 Individual 281F141617 Individual 282F151716 Individual 283M21911 individual 284F2055 individual 285F91615 Individual 286M221012 Individual 287F211311 Individual 288F20138 Individual 289F211214 Individual 290M541112 Individual 291F2877 Individual 292M291313 Individual 293M30910 Individual 294M21109 Individual 295F19911 Individual 296F221215 Individual 297F211418 Individual 298M471915 Individual 299M31114 Individual 300F2067 Individual 301M551714 Individual 302F551612 Individual 303F21107 Individual 304F201713 Individual 305M181518 Individual 306M161920 Individual 307M241813 Individual 308F2356.5 Individual 309F29119.5 Individual 310M21109 Individual 311F20137 Individual 312M501814 Individual 313F501815 Individual 314F211312 Individual 315M181011 Individual 316F521413 Individual 317M59910 Individual 318F202012 Individual 319M181214 Individual 320F351820 From the class data posted (see google doc links) present your summary of the data below. You should plot mean values (+/- standard error of the mean) for each group. Your summary data should compare sex and age where appropriate. You figures should be supported by a concise and informative legend: Digit Ratios (15 marks) Carrying Angles (15 marks) How do the 2D:4D digit ratios compare? Are they what you would expect? You should refer to at least two primary research articles from the scientific literature to support your argument. (15 marks) Briefly, what, if any, is the endocrine basis for sex/age differences in digit length ratios? You should refer to at least two primary research articles from the scientific literature to support your argument. (20 marks) How do the carrying angles compare? Are they what you would expect? You should refer to at least two primary research articles from the scientific literature to support your argument. (15 marks) Briefly, what, if any, is the endocrine basis for sex/age differences in carrying angles? You should refer to at least two primary research articles from the scientific literature to support your argument. (20 marks) STOP HERE This is the end of the report section. Below provide the references you cited in support of your answers. The references must be listed in Harvard style. Do not use a link to a webpage nor use a self-help health website. References:
Answered Same DayMay 16, 2021

Answer To: Sheet1 Right arm:Left arm: SexAgeAngle (°)Angle (°) Individual 1F221118 Individual...

Rajeswari answered on May 16 2021
143 Votes
From the class data posted (see google doc links) present your summary of the data below. You should plot mean values (+/- standard error of the mean) for each group. Your summary data should compare sex and age where appropriate. You figures should be supported by a concise and informative legend:
Digit Ratios (15 marks)
    2d: ratio
     
     
     
    Mean
    10.859220287
    Std error
    0.002562335
Hence we get 10.859±0.00256 = (10.8567, 10.8618)
Carry
ing Angles (15 marks)
    Right arm (angle)
    Left arm (angle)
    Mean
    13.4873
    Mean
    13.47588
    Standard Error
    0.282532
    Standard Error
    0.281874
Hence we write as
For right angle
13.4873±0.2825 = (13.2048, 13.7698)
For left angle
13.4759±0.2819=(13.1940, 13.7578)
How do the 2D:4D digit ratios compare? Are they what you would expect? You should refer to at least two primary research articles from the scientific literature to support your argument. (15 marks)
We expect that 2D:4D digit ratios would be equal for males and females or ages.
From a study of 136 males and 137 females at the University of Alberta:[32]
· Males: mean 0.947, standard deviation 0.029
· Females: mean 0.965, standard deviation 0.026
Observed values are:
    Mean
    1.978479661
    1.930562614
    Std dev
    0.049857313
    0.050001882
    n
    250
    148
These are very much different from the expected as in the internet articles.
1. Mayhew TM, Gillam L, McDonald R, Ebling FJ (November 2007). "Human 2D (index) and 4D (ring) digit lengths: their variation and relationships during the menstrual cycle". Journal of Anatomy. 211 (5): 630–638. doi:10.1111/j.1469-7580.2007.00801.x. PMC 2375787. PMID 17764524.
2. ^ Jump up to:a b c Kumar, Sanjay; Voracek, Martin; Singh, Maharaj (6 March 2017). "Sexual Dimorphism in Digit Ratios Derived from Dorsal Digit Length among Adults and Children". Frontiers in Endocrinology. 8: 41. doi:10.3389/fendo.2017.00041. ISSN 1664-2392. PMC 5337486. PMID 28321205.
3. ^ Jump up to:a b c Auger, J.; Eustache, F. (August 2011). "Second to fourth digit ratios, male genital development and reproductive health: A clinical study among fertile men and testis cancer patients: Finger ratios and male reproductive health". International Journal of Andrology. 34 (4pt2): e49–e58. doi:10.1111/j.1365-2605.2010.01124.x. PMID 21091719.
Briefly, what, if any, is the endocrine basis for sex/age differences in digit length ratios? You should refer to at least two primary research articles from the scientific literature to support your argument. (20 marks)
Digit lengths increased with age and tended to be longer in males but did not differ with hand preference. In the right hand, there were significant age (P<0.01), gender (P<0.001) and hand preference (P<0.05) effects on the 2D:4D ratio and a significant age×gender interaction (P<0.05).
· The ratio of 2nd to 4th digit length: a predictor of sperm numbers and concentrations of testosterone, luteinizing hormone and oestrogen.[Hum Reprod. 1998]
· Scientometric analysis and bibliography of digit ratio (2D:4D) research, 1998-2008.[Psychol Rep. 2009]
· On the relation between 2D:4D and sex-dimorphic personality traits.[Arch Sex Behav. 2008]
2D:4D ratios of males and females show a difference of 0.047900. To check whether this is significant at 5% level, we create hypotheses as:
H0: averge of females = average of males
Ha: averge of females ≠average of males
(Two tailed test)
The two-tailed P value is less than 0.0001
By conventional criteria, this difference is considered to be extremely statistically significant.
(Refer excel sheet for data sorting between males and females)
By previous hypothesis we found that there is a significant difference in digit length ratios of males and females
Let us check agewise
For this we sort the original data according to age and group it.
The scatter plot of age vs 2D:4D ratio is almost horizontal. This means that 2D:4D ratio is not dependent on age.
i.e. the ratio depends on the sex significantly but not dependent on age.
How do the carrying angles compare? Are they what you would expect? You should refer to at least two primary research articles from the scientific literature to support your argument. (15 marks)
When your arms are held out at your sides and your palms are facing forward, your forearm and hands should normally be about 5 to 15 degrees away from your body. This is the normal "carrying angle" of the elbow. This angle allows your forearms to clear your hips when you swing your arms, such as during walking
The carrying angle is...
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