Frequency tables
Not what you're looking for?
1.
Grade,
x Freq Probability P(x) xP(x) (x-µ )sqP(x)
9 3604
10 3131
11 2749
12 2488
Total µ= sigma sq=
Determine the probability distribution of the randum varible x.
What is the probability taht a randomly selected student is either in the 9th or 10th grade?
What is the probability that a randomly selected student is in at most 11th grade?
Find the mean and standard deviation of the random variable x.
Purchase this Solution
Solution Summary
Grade,
x Freq Probability P(x) xP(x) (x-µ )sqP(x)
9 3604
10 3131
11 2749
12 2488
Total µ= sigma sq=
Determine the probability distribution of the randum varible x.
What is the probability taht a randomly selected student is either in the 9th or 10th grade?
What is the probability that a randomly selected student is in at most 11th grade?
Find the mean and standard deviation of the random variable x.
Solution Preview
----------------------------------------------------------------------
<br>Determine the probability distribution of the random varible x.
<br>
<br>Total number of students = 11972
<br>P(x=9 ) = 3604/11972 = 0.30
<br>
<br>P(x=10) = 3131/11972 = 0.26
<br>
<br>P(x=11) = 2749/11972 = ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.