Thursday, January 30, 2014MAT 312. Thursday, January 30, 2014MAT 312.

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Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312 ABCDEFGHJActual Perfect Square  4% 3-digit #  83.5% Digit:  32.5% Digit:  19% Even #  50%

Thursday, January 30, 2014MAT 312 Is there an easier way to find the amount of numbers in census sample for “contains the digit 4” and “contains the digit 9”? What is an easy way to do the cluster method? How do you choose a method? Are convenience samples ever to be considered reliable? What are they used for? We are just curious as to how many simple random samples you would need to obtain to make sure the data accurately represents the total population. We have concerns on how best to cluster and group number to keep consistency. We are also concerned on the accuracy of our answers for questions (1) and (2) because we are unsure what we are measuring. We wonder if stratified samples are the most versatile for different populations We think it will be effective for a variety of populations. Would a stratified random sample be the most accurate all the time? How big the sample has to be to represent a population? Which sampling is best for certain information that is being surveyed in a population? It is a concern of ours how often an inaccurate sample is used. Also, how important is it to choose the type of sample that would accurately represent the population is our other concern.

DisplaySummary Visual ? Numerical ? Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312

DisplaySummary Visual Line Plot (Dot Plot) Stem-and-Leaf Plot Circle Graph Bar Graph Histogram Box-and-Whisker Plot Numerical Ordered List Frequency Table Measures of Center (mean, median, mode) Measures of Spread (range, deviations, variance) Thursday, January 30, 2014MAT 312

Thursday, January 30, 2014MAT 312