BIBLIOGRAPHY https://images.search.yahoo.com/search/images;_ylt=AwrE1.DY6bRgb9kAGKdXNyoA;_ylu=Y29sbwNiZjEEcG9zAzEEdnRpZANDMjAwMV8xBHNlYwNwaXZz?p=PERPENDICULAR+LINES&fr2=piv-web&fr=mcafee#id=4&iurl=https%3A%2F%2Fd138zd1ktt9iqe.cloudfront.net%2Fmedia%2Fseo_landing_files%2Fusha-perpendicular-14-1597380762.png&action=click Platinum Grade 6 Mathematics

Joaninha is analyzing data on a marketing campaign for a Portuguese bank. She wishes to test if the average sales call duration is different for customers with or without a loan.  Consider a two group independent samples hypothesis test with customers with no loans assigned to group 1 and customers with loans assigned to group 2. What two-tailed alternative hypothesis should she use?

The following picture shows the output from the str command on a data frame. In the output, what does “Ford”  signify in the data frame?

You are running hierarchical clustering using the average linkage method.  Consider that two items a and b have been merged.  A third item c has a distance of 4 to item a and a distance of 6 to item b, so that d(c,a)=4 and d(c,b)=6.  What is this item’s distance to the new merged cluster, which we will call n? 

Given the following output from the get_eigenvalue function, how much variance in the data is accounted for by solely the third principal components?

The following scatterplot shows consumer ratings for cars on two dimensions (exciting and safety). Given the information in the above scatterplot, which pair of car brands has the largest distance between them?

AFDELING C: [20]

You wish to create a histogram using R using the hist function.  What parameter setting should you use to ensure that the histogram is a probability histogram rather than a frequency histogram (i.e., the area sums to 1).

Given a PCA output object cust.pr, which sub-object gives the lower dimensional configuration, i.e., the values that are plotted on the scatterplots?

You wish to show the last 100 rows of a data frame in the console window. Which command will you use?