The number of clusters must be determined [35]. An acceptable number of subgroups was determined

The number of clusters must be determined [35]. An acceptable number of subgroups was determined determined by a cutoff value of 15 and also the largest distance in between clusters (vertical lines) within the dendrogram [37] (Figure 1). K-means clustering, which allows the researcher to select the suitable variety of clusters for the analysis, was conducted employing Ward’s approach to partition the dataset into suitable subgroups, e.g., [25,35]. The maximum iterations were adjusted from ten to 99 to avoid any challenges with early convergence inside the remedy. Convergence was achieved in 12 iterations. Soon after individual instances had been assigned for the two clusters, analysis of variance (ANOVA) was employed to figure out the magnitude of difference amongst the variables of interest and cluster membership. Chisquare analyses have been used to establish significant variations between the cluster groups’ categorical demographics (e.g., age, sex, education, family members revenue, and political ideology)., 13, x FOR PEER PK 11195 manufacturer REVIEW7 ofWater 2021, 13,7 ofthe cluster groups’ categorical demographics (e.g., age, sex, education, family members earnings, and political ideology).Figure 1. Dendrogram output utilizing Ward Linkage to establish quantity of clusters.Figure 1. Dendrogram output using Ward Linkage to ascertain variety of clusters.2.five. LimitationsUsing non-probability opt-in sampling must be acknowledged as a limitation. Though public opinion analysis normally makes use of non-probability opt-in sampling [31], the sample Using non-probability opt-in sampling has to be acknowledged as a limitation. Altmay have bias, as not all kinds of men and women have access to the online and not all forms hough public opinion research usually uses non-probability opt-in sampling [31], the samof men and women will answer surveys [32]. In addition, the BI-0115 Purity survey focused on water and ple might have bias, as not all sorts of men and women have access towards the web and not all respondents may have felt pressured to conform to their perceived norm about water types of folks will answer surveys [32]. Furthermore, the survey focused on water and conservation [39]. respondents might have felt pressured to conform to their perceived norm about water conData have been collected for the duration of a politically contentious time period within the U.S. [40], possiservation [39]. bly altering respondents’ political viewpoints in the brief term. For example, a partisan divide inside the U.S. public was triggered by the 2020 Presidential Election, with all the Republican incumbent obtaining the biggest partisan gap in approval rating recognized from polling2.five. LimitationsWater 2021, 13,8 ofdata [41]. Moreover, the death of George Floyd, a Black man who was killed in police custody in Minneapolis, sparked protests about the country [42]. The U.S. public was divided in their opinions of what caused the protests, with 45 of Republicans and 84 of Democrats believing the protests have been because of deep-rooted mistreatment of Black folks inside the country [42]. A different limitation was that data had been collected through the coronavirus pandemic, which might have influenced how respondents participated inside the survey. As an example, the coronavirus pandemic triggered lots of public spaces, like libraries and online cafes, to temporarily close and only residents with web access had the ability to participate in the on the internet survey [43,44]. Furthermore, the coronavirus pandemic enhanced consumers’ engagement with nature (i.e., visiting parks, identifying plants and animals) throughout the U.S. [45], which.