Why does the watermelon farmer want to study seed density?

Sample Statistics and Seed Density

Interactive Video
•
Mathematics, Science
•
9th - 12th Grade
•
Hard

Jackson Turner
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To improve the taste of watermelons
To breed watermelons with fewer seeds
To increase the number of seeds in watermelons
To sell more watermelons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of taking random samples from watermelons?
To improve the color of watermelons
To increase the number of watermelons
To sell the samples
To estimate the seed density without cutting all watermelons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the sample mean calculated?
By subtracting the smallest value from the largest
By multiplying all sample values
By adding all sample values and dividing by the number of samples
By averaging the first and last sample values
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sample mean of the given seed counts?
7
8
5
6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do we divide by n-1 when calculating the unbiased sample variance?
To make the calculation easier
To account for the sample size and provide an unbiased estimate
To increase the variance
To decrease the variance
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unbiased sample variance of the seed counts?
11.43
10.43
9.43
8.43
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the sample standard deviation calculated?
By taking the square root of the unbiased sample variance
By multiplying the sample variance by n
By dividing the sample variance by n
By taking the square root of the sample mean
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