Practice questions for Exam 1 This practice exam is not intended to duplicate the actual exam. It is intended to provide practice as part of your exam preparation. 1. The study of statistics encompasses all of the following except A. properly collecting o
In class Review for the Final #1 24.36 Sparrowhawk colonies. One of nature's patterns connects the percent of adult birds in a colony that return from the previous year and the number of new adults that join the colony. Can the percent of returning a
Checking the Conditions
Note: When checking each of the conditions, regardless of the procedure, you must do all three of the following: 1. State the complete condition. 2. Say whether or not the condition is met (either completely or not at all met-
Week 6: Things to watch for, understand, be able to explain, do, etc.:
Two Way Tables:
1. \Vhat kind of data?
2. Which is explanatory? Which is response?
4. Marginal distributions
5. Row conditional distributions
6. Reading and understanding ta
Cat eg o ric al O n e sa m p le p ro p o rtio n Tw o -sa m p le p ro p o rtio n : 2 x2 tw o -w a y ta b le C h i-sq u a re te st: tw o -w a y ta b le b ig g e r th a n 2 x2
Qu ant it at iv e O n e sa m p le m e a n Tw o -sa m p le m e a n : o n ly 2
alternative hypothesis: A statement about the value of a parameter that is either "less than," "greater than," or "not equal to" a hypothesized number or another parameter; the hypothesis that the researcher usually wants to prove or verify
Jeopardy questions for final 1. Estimate of the standard deviation of x . 2. All expected counts are greater than or equal to 5. 3. H0: p 1 = p 2 = p 3 = p 4 versus Ha: not all proportions are equal. 4. 75% 5. A megaphone pattern in the residual plot
Glossary for terms on Exam 1
bar graph: a graphical representation of categorical data. Names of each category are listed on the x axis and a bar is place over each category name having height equal to the frequency (or percentage) in that category. bias:
Self Assessment for Chapter 2 1. Click on Begin Assessment button. 2. Scroll down to begin quiz.
Self Assessment for Chapter 2 1. Find the median of the following 9 numbers: 67 63 43 54 77 69 68 55 85.
2. Refer to the above data. Suppose that the last
Self Assessment for Chapter 1 1. Click on Begin Assessment button. 2. Scroll down to begin quiz.
Self Assessment for Chapter 1 2 1. In a study of commuting patterns of people in a large metropolitan area, respondents were asked to report the time they t
Self Assessment for Chapter 3 1. Click on Begin Assessment button. 2. Scroll down to begin quiz.
Self Assessment for Chapter 3 2 1. Which one of the following quantities would give us information about a sample? x
Self Assessment for Chapter 3 3 2. Whi
Self Assessment for Chapter 8 1. Click on Begin Assessment button. 2. Scroll down to begin quiz.
Self Assessment for Chapter 8 2 1. In 1993, presidential candidate Ross Perot appeared on television to voice his opinions on government reform. To gauge pu
Self Assessment for Chapter 9 1. Click on Begin Assessment button. 2. Scroll down to begin quiz.
Self Assessment for Chapter 9 2 Use this experiment to answer quiz questions 1 through 7. 1. Hirsch and Johnston from the Smell & Taste Treatment and Resear
STAT 221, Section 83
Essay Quiz 31
a) State: Do the data provide sufficient evidence that the mean rod diameter exceeds
Formulate: Observational study. Perform one-sample t test on the mean. The
parameter is the mean rod diameter,