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# Writing an Introduction

 Writing an Introduction 1) Description & Investigative Question Why have you chosen your variables? Include the word 'relationship' but NOT imply that a relationship exists. NO “what is the relationship between…” YES “I wonder if there is a relationship between…” 2) Source of Data Where is the data from? How reliable is the source? Is it representative? 3) Aim / Interest Is the question of interest and value? Who may find it useful & why? Could the results be reasonably extended to the population? 4) Variables Defined & Described with units, and state which variable is considered explanatory and which is dependent (if applicable) 5) Hypothesis Do you think there will be an association and why? … ‘I think that… because 6) Research findings summarized Background context provided with evidence of research. What are the findings of other related research? Research Question Ideas (Relating to CORRELATION) I wonder what the relationship between (variable 1) and (variable 2) is in (population)? Is this relationship different between (groups)? OR I wonder what the relationship between (variable 1) and (variable 2) is in (population)? How might this relationship compare between (variable 1) and (variable 3)? OR (Relating to REGRESSION) Can (variable 1) be used as a good predictor for (variable 2)? Or would (variable 3) be a better predictor for (variable 2)?   The aim of your investigation should include the word 'relationship' but NOT imply that a relationship exists    NO:   “what is the relationship between…”    YES: “I wonder if there is a relationship between…” p49 Ex 'B' Purpose statements Class Exemplar: Hawai'i Island Chain: Data csv, Information page | Google Doc write up Class Exemplar: American New Cars 1993 Data csv, Information pdf | Google Doc write up

# McDonalds Example: Introduction

 Product Serving size (g) Energy (kJ) Protein (g) Fat, total (g) Carbohydrate total (g) Sodium (mg) Hamburger 107 1070 14.2 9.4 28.7 503 Cheeseburger 121 1280 17.1 13.6 29.2 741 Filet-o-fishTM 143 1435 16.1 14.3 37.6 712 McChickenTM 191 2086 19.6 25 47.7 1060 Chicken McNuggetsTM 108 1164 20.1 12.2 21.8 605 Quarter PounderTM 219 2414 33.3 31.3 41 1257 Big MacTM 224 2196 28.6 27.7 37.5 962 Chicken Royale 282 2589 32.4 29.1 56.1 1240 French Fries (medium) 112 1417 4.7 16.3 47.5 314 Bacon & Egg McMuffinTM 148 1301 19.7 13.8 26.8 677 Sausage & Egg McMuffinTM 159 1608 25 19.5 27.3 715 Hash brown 67 578 1.8 7.4 17.2 295 Sundae Chocolate 173 1201 6.6 4.5 55.5 157