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STATISTICS 101 UNIT 1 REVIEW 2024/2025 ACCURATE ANSWERS
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STATISTICS 101 UNIT 1 REVIEW 2024/2025 ACCURATE ANSWERS
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STATISTICS 101 UNIT 1 REVIEW2024/2025 ACCURATE ANSWERS
,STATISTICS 101 UNIT 1 REVIEW
2024/2025 ACCURATE ANSWERS
Bar chart - CORRECT ANSWERSBar charts show a bar whose area represents the count of observations
for each category of a categorical variable
Bar charts show a bar whose area represents the count of observations for each category of a
categorical variable - CORRECT ANSWERSBar chart
Relative frequency bar chart - CORRECT ANSWERSBar charts show a bar whose area represents the
percentages of observations for each category of a categorical variable
Bar charts show a bar whose area represents the percentages of observations for each category of a
categorical variable - CORRECT ANSWERSrelative frequency bar chart
Upper fence formula - CORRECT ANSWERSQ3 + 1.5 X IQR
Lower fence formula - CORRECT ANSWERSQ1 - 1.5 X IQR
What are Data? - CORRECT ANSWERSCan be numbers (height, ages) and can be labels (hair, politics,
gender, eye color)
Context - 5 Ws of Data - CORRECT ANSWERSWho, what, when, where, why, how
Only meaningful in context!
Who = - CORRECT ANSWERSRows (individuals)
What - CORRECT ANSWERSColumns (variables)
, We would like to find out how long McDonalds French Fries are, so we order a large Fries. What is the
sample? Population? - CORRECT ANSWERSSample: Large Fries
Population: All french fries
We would like to find out how many houses in Ames have burglar alarms, so we break into two houses.
What is the sample? Population? - CORRECT ANSWERSSample: Two houses
Population: All houses houses with alarms
We would like to figure out in general characteristics of Stats 101 students, so we ask a general
questionnaire to all students in our section. What is the sample? Population? - CORRECT
ANSWERSSample: Students in our section
Population: All Stats 101 students
Age (in years) - CORRECT ANSWERSQuantitative
Age (child or adult) - CORRECT ANSWERSCategorical
Education level (HS, some college, masters) - CORRECT ANSWERSCategorical
Height - CORRECT ANSWERSQuantitative
Number of teeth - CORRECT ANSWERSQuantitative
Gender - CORRECT ANSWERScategorical
Tabular summary - CORRECT ANSWERS- Frequency table
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