Question

Find the mean absolute deviation for the following test scores: 75, 85, 90, 100, 95, 70,...

Find the mean absolute deviation for the following test scores: 75, 85, 90, 100, 95, 70, 85, 90, 80, 100

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

number of observations (n) = 10

the mean be:-

the necessary calculation table :-

xi
75 |75-87| = |-12|= 12
85 2
90 3
100 13
95 8
70 17
85 2
90 3
80 7
100 13
sum=870 sum=80

the mean absolute deviation be :-

*** if you have any doubt regarding the problem please write it in the comment box.if you are satisfied please give me a LIKE if possible...

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The test scores of 30 students are listed below. Find the five-number summary. 31              41...
The test scores of 30 students are listed below. Find the five-number summary. 31              41        45        48        52        55        56        58        63        65 67              67        69        70        70        74        75        78        79        79 80              81        83        85        85        87        90        92        95        99 Find the percentile that corresponds to a score of 74....
Assume that a set of test scores is normally distributed with a mean of 100 and...
Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 10. Use the​ 68-95-99.7 rule to find the following quantities. a. The percentage of scores less than 100 is __% b. The percentage of scores greater than 110 is __% c. The percentage of scores between 80 and 110 is __% (Round to one decimal place as needed)
Consider the following random sample of test scores (in percentages) from a biology final exam. 95     ...
Consider the following random sample of test scores (in percentages) from a biology final exam. 95      65      70      75      74      86      82 95      45      80      72      70      78      72      80 1. Find the five-number summary for this data set. 2. Make a box-and-whisker plot. 3. Find the interquartile range.
A normal distribution of MA-321 test scores has a mean of 81.7 and a standard deviation...
A normal distribution of MA-321 test scores has a mean of 81.7 and a standard deviation of 5.8 Answer the following: a) What percentage of the test scores are below 90? b) What percentage of the test scores are above 75? c) What percentage of students have test scores between 80 and 93? d) What test score is at the 95th percentile?
Assume that a set of test scores is normally distributed with a mean of 80 and...
Assume that a set of test scores is normally distributed with a mean of 80 and a standard deviation of 20. Use the​ 68-95-99.7 rule to find the following quantities. The percentage of scores less than 80 is __% The percentage of scores greater than 100 is _% The percentage of scores between 40 and 100 is _% Round to the nearest one decimal
For the following, consider that IQ scores are normally distributed with a mean of 100 and...
For the following, consider that IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a person has an IQ below 60 Find the probability that a randomly selected person has an IQ between 60 and 85 Find the probability that a randomly selected person has an IQ above 118. Find the IQ score that cuts off the lower 25% of the population from the upper 75%. Find the probability...
Here are four grades: HW = 80, test = 75, project = 90, quiz = 85...
Here are four grades: HW = 80, test = 75, project = 90, quiz = 85 . (a) What is the mean? (b) What is the medium?   (c) What is the weighted meean assuming these weights: HW 15%, test 20%, project 15%, and quiz 15%.
Based upon the following SRS from normal distributions, are California test scores higher than Nevada test...
Based upon the following SRS from normal distributions, are California test scores higher than Nevada test scores? Test at the .05 level. California test scores { 70, 75, 70, 80, 85 } Nevada test scores { 60, 70, 60, 75, 80 } What is the value of your test statistic? a) 2.331 b) 1.258 c) 1.414 d) .865
Student scores on the Stats final exam are normally distributed with a mean of 75 and...
Student scores on the Stats final exam are normally distributed with a mean of 75 and a standard deviation of 6.5 Find the probability of the following: (use 4 decimal places) a.) The probability that one student chosen at random scores above an 80. b.) The probability that 10 students chosen at random have a mean score above an 80. c.) The probability that one student chosen at random scores between a 70 and an 80. d.) The probability that...
Based upon the following SRS from normal distributions, are California test scores higher than Nevada test...
Based upon the following SRS from normal distributions, are California test scores higher than Nevada test scores? Test at the .05 level. California test scores { 70, 75, 70, 80, 85 } Nevada test scores   { 60, 70, 60, 75, 80 } What' s the null hypothesis, alternative hypothesis, Test statistic, df, p-value, statistical conclusion conclusion in plain english.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT