
Sampling Variability and Sample Means

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the first dot plot represent in the context of sampling variability?
Means of 20 samples with 5 data points each
Means of 15 samples with 20 data points each
Means of 5 samples with 20 data points each
Means of 20 samples with 15 data points each
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the second dot plot considered more reliable for answering the statistical question?
It uses fewer data points per sample
The sample means are more tightly clustered
It shows more variability in sample means
It has a wider range of sample means
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in selecting a random sample using a table of random digits?
Choose a random number between 1 and 100
Select a three-digit number from the table
Calculate the mean of the sample
Estimate the population mean
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many times should the random sampling process be repeated to calculate the sample mean?
20 times
15 times
10 times
5 times
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of calculating the mean of 15 sample values?
To determine the mode of the sample
To estimate the population mean
To find the median of the population
To calculate the range of the sample
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the dot plot of sample means from samples of size 15 compare to that of size 5?
It is more clustered and shows less variability
It has a wider range
It is more spread out
It has no repeated values
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a smaller sampling variability indicate about the sample mean?
It is less likely to be close to the population mean
It is more likely to be close to the population mean
It has a wider range of values
It is more spread out
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