User talk:APStats2017

LBHS Key Club Members Act Scores Survey

Group members: Leah Salisbury, Anastasia Thibodeaux, and Chandler Scarborough

Goal: The goal of this survey is to determine if grade level is a factor in ACT scores

Survey Sample {insert Stat pic 1}

Brief Description of the Design of the Survey

To conduct the ACT score survey, first we took the Key Club population who are signed up on Remind. The population is made of 54 members, but excluding Leah Salisbury and Anastasia Thibodeaux (the surveyors) the population is 52 members. From the 52 members, we randomly selected 30 members using Table D to create a simple random sample. However, only 20 members participated in the survey. With limited bias we were able to conclude the results of the survey.

Description of Bias

To account for nonresponse bias, we selected sixty percent of the population in hopes to receive the survey about forty percent of the population. Key Club was chosen as the targeted club for the survey because Key Club requires no prerequisites in joining the club; therefore, we received a wide range of ACT scores. To avoid convenience sampling, the survey was conducted as a simple random sample thus eliminating major bias. In hopes of achieving more accurate results, additional questions were added to the survey.

Description of Findings

Using a bar chart, we concluded that 50% of surveyed key club members have taken the ACT and 50% have not taken the ACT. The graph below shows the percentage of people in each grade that have taken the ACT. There are 14.3 % of ninth graders that have taken the ACT, 57% of tenth graders, 66.6% of eleventh graders, and 100% of twelfth graders. After creating a scatter plot graph comparing grades and ACT scores, the graph yielded a positive linear shape. Two outliers lie at (11,19) and (10,31). These results concluded that there is a positive association between grade level and ACT scores.

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