What representations are best for categorical data?

contingency tables, frequency tables, dot plots, bar graphs

What representations are best for quantitative variables?

box and whisker, stem and leaf, histograms, scatter plots

What is the first component of statistical problem solving?

formulate a statistical question

What are the three types of potential bias in sample surveys?

sampling, nonresponse, response

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Test 1 Review: Chapters 1, 2, 3, and 4

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Test review for the first exam of a probability and statistics course.

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Questions 10

Answers

1
What values make up the five number summary?
mean, median, mode, range, standard deviation
Q1, Q2, Q3, Q4, Q5
min, Q1, mean, Q3, max
min, Q1, median, Q3, max
2
What is the equation for a regression line?
y = a+bx
ŷ = a+bx
y = mx+b
r = ax+b
3
What is the formula for z-score?
z=(s-ẍ)/n
z=(ẍ-x)/n-1
z=(x-ẍ)/s
z=(x-ẍ)/n-1
4
What representations are best for categorical data?
frequency tables, stem and leaf plots, scatter plots
histograms, box and whisker plots, stem and leaf plots
contingency tables, frequency tables, dot plots, bar graphs
contingency tables, histograms, dot plots
5
What representations are best for quantitative variables?
scatter plots, bar graphs, contingency tables
histogram, scatter plot, frequency table
box and whisker, stem and leaf, histograms, scatter plots
stem and leaf, dot plot, bar graph
6
What symbol is used to represent correlation and what values can it take?
c, it is the same value as the slope
c, between -1 and 1
r, between -1 and 1
r, between negative infinity and positive infinity
7
An observation that falls well above or below the overall bulk of the data.
range
standard deviation
resistant
outlier
8
The subset of the population for whom we have (or plan to have) data, often randomly selected
statistics
sample
random sampling
population
9
What is the first component of statistical problem solving?
define sample population
analyze data
collect data
formulate a statistical question
10
What are the three types of potential bias in sample surveys?
sampling, nonresponse, response
convenience, volunteer, undercoverage
undercoverage, nonresponse, sampling
sampling, undercoverage, response

Test 1 Review: Chapters 1, 2, 3, and 4 Flashcards | StudBud