Exam (elaborations)
Stat 231 Test 1 questions with correct answers
- Course
- Stats 231
- Institution
- Stanford University
Stat 231 Test 1 questions with correct answers
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Stat 231 Test 1 questions with correct answersVariable - ** VERIFIED ANSWERS🔰 ✔✔characteristic or attribute that can assume
different values
Population - ** VERIFIED ANSWERS🔰 ✔✔complete collection of all members of a
defined group that we are studying or collecting information on for data driven decisions
Sample - ** VERIFIED ANSWERS🔰 ✔✔sub collection of members selected from a
population
Data - ** VERIFIED ANSWERS🔰 ✔✔collections of observations (such as measurements,
genders, survey responses)
Statistic - ** VERIFIED ANSWERS🔰 ✔✔numerical measurement describing some
characteristic of a sample
(use alphanumerical letters)
Parameter - ** VERIFIED ANSWERS🔰 ✔✔numerical measurement describing some
characteristic of a population
(use greek letters)
Example: Statistic or Parameter
the average (mean) atomic weight of all elements int he periodic table is 134.355 unified
atomic mass units - ** VERIFIED ANSWERS🔰 ✔✔Parameter (all the elements)
, Example: Statistic or Parameter
in a random sample of households, it was found that 47% of the sampled households had
high-definitions TVs - ** VERIFIED ANSWERS🔰 ✔✔Statistic
Categorical/Qualitative Data - ** VERIFIED ANSWERS🔰 ✔✔consists of names or labels
that are NOT numbers representing counts or measurements
Ex: Color, Cloning, Gender
Quantitative/Numerical Data - ** VERIFIED ANSWERS🔰 ✔✔consists of numbers
representing counts or measurements
Ex: Age, temp, height, weight
Two types of Quantitative Data - ** VERIFIED ANSWERS🔰 ✔✔Discrete Data
Continuous Data
Discrete Data - ** VERIFIED ANSWERS🔰 ✔✔assume values that can be counted, such as
0, 1, 2, 3, and so on.
Can NEVER be a decimal or a fraction
Continuous Data - ** VERIFIED ANSWERS🔰 ✔✔could possibly assume any values
between any two specific values
obtained by MEASURING and often include fractions and decimals
Example: Discrete OR Continuous
The Honda Civic has 4 cylinders - ** VERIFIED ANSWERS🔰 ✔✔Discrete Data
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