weighted mean
Flashcard
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for calculating the weighted mean?
Back
Weighted Mean = (Σ (weight_i * value_i)) / Σ weight_i, where weight_i is the weight of each value and value_i is the value.
Tags
CCSS.6.SP.B.5C
2.
FLASHCARD QUESTION
Front
If a student's grades are weighted as follows: class score - 60%, lab score - 25%, final exam score - 15%, how do you calculate the final grade?
Back
Multiply each score by its weight, sum the results, and round to the nearest tenth.
3.
FLASHCARD QUESTION
Front
What does it mean if a data distribution is skewed left?
Back
A left-skewed distribution has a longer tail on the left side, indicating that the majority of the data points are concentrated on the right.
4.
FLASHCARD QUESTION
Front
What does it mean if a data distribution is skewed right?
Back
A right-skewed distribution has a longer tail on the right side, indicating that the majority of the data points are concentrated on the left.
5.
FLASHCARD QUESTION
Front
How do you round a number to the nearest tenth?
Back
Look at the hundredths place; if it is 5 or greater, round up the tenths place by one. If it is less than 5, keep the tenths place the same.
Tags
CCSS.5.NBT.A.4
6.
FLASHCARD QUESTION
Front
What is the significance of weights in calculating a weighted mean?
Back
Weights determine the relative importance of each value in the dataset when calculating the mean.
7.
FLASHCARD QUESTION
Front
In the context of grades, what does a weight of 50% for a project imply?
Back
It means that the project contributes half of the total grade, making it the most significant component in the final grade calculation.
Tags
CCSS.6.SP.B.5C
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