1. Nancy noticed the grocery store near her house is busier on different nights of the week. Nancy wrote the following steps outlining her investigation on the number of people going to the grocery store.
I.hypothesized that more people go to the grocery store on Saturday night than on any other night of the week
II.counted the number of people going into the grocery store from 8 p.m. to 9 p.m. on each night of the week, for one week each month, for one full year
III.made a table showing the results
IV.drew a bar graph with a different color for each week

Question

1. Nancy noticed the grocery store near her house is busier on different nights of the week. Nancy wrote the following steps outlining her investigation on the number of people going to the grocery store.
I.hypothesized that more people go to the grocery store on Saturday night than on any other night of the week 
II.counted the number of people going into the grocery store from 8 p.m. to 9 p.m. on each night of the week, for one week each month, for one full year
III.made a table showing the results
IV.drew a bar graph with a different color for each week

anonymous · Answer

V.concluded that the hypothesis holds true

anonymous · Answer

How about doing some statistical analysis on the data?

anonymous · Answer

What would best describe what Nancy was doing in step IV?

anonymous · Answer

merely presenting the data for visual inspection

should graph all Mondays, all Tuesdays, etc.
to look for pattern

should take mean of Monday, Tuesday, etc. separately
to compare the days  

could compare average of Saturday vs average of all other days

then apply test of
statistical significance of differences,
such as Student's t-test of means