Question

Given the following distribution of statistics test grades: 73,92,57,89,70,95,75,80,87,88,47,88,64,86,79,72,71,77,93,95,75,50,99,75,85. Construct a stem-and -leaf display. Describe the...

  1. Given the following distribution of statistics test grades: 73,92,57,89,70,95,75,80,87,88,47,88,64,86,79,72,71,77,93,95,75,50,99,75,85.

    1. Construct a stem-and -leaf display.

    2. Describe the shape of the distribution.

    3. How many test grades are greater than 85?

    4. What percent of the test grades are less than or equal to 70?

    5. What is the median of these grades.

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

Homework Answers

Answer #1

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
Consider the following stem-and-leaf display for grades of 36 students in a statistics class:: 5 |...
Consider the following stem-and-leaf display for grades of 36 students in a statistics class:: 5 | 8 6| 0 2 6 8 7 | 2 2 2 4 5 5 8 9 9 8 | 1 1 2 5 5 6 6 6 8 9 9 | 1 2 3 4 5 5 6 8 8 9 9 9 In a pie chart, how many degrees are in the pie slice for the class "91-100"
The scores for a class of 30 people are represented in the stem-and-leaf display below.  How best...
The scores for a class of 30 people are represented in the stem-and-leaf display below.  How best would you describe the shape of this distribution? A.Mount-shaped symmetrical B. Skewed right C.uniform D. skewed left E. bimodal
Describe how to construct a​ stem-and-leaf plot from a set of data. Assume that the data...
Describe how to construct a​ stem-and-leaf plot from a set of data. Assume that the data consist of​ two-digit numerical values. Choose the correct answer below. A. ​First, organize the data into several​ classes, such as​ 40-49, 50-59, and so on.​ Then, tally the number of data items in each​ class, and determine the percentage of the population occupied by each class. Draw a​ circle, and divide the circle into portions representing the percentage for each class. B. The plot...
From the following stem-and-leaf display, find the 1st quartile, the 2nd quartile (or median), the 3rd...
From the following stem-and-leaf display, find the 1st quartile, the 2nd quartile (or median), the 3rd quartile, the interquartile range, and interpret the interquartile range result. What values will be considered outliers? 1| 9 2| 0 1 2 2 6 9 3| 0 1 2 3 4 5 5 7 8 8 9 4| 2 6 5| 0 1 2 4 5 7 8 9 6| 5 9
Here is a data set summarized as a stem-and-leaf plot: 5# | 0022234569 6# | 01145555667779...
Here is a data set summarized as a stem-and-leaf plot: 5# | 0022234569 6# | 01145555667779 7# | 01256 8# | 149 How many data values are in this data set? n= What is the minimum value in the last class? ans = What is the frequency of the modal class? (Hint, what is the mode?) frequency = How many of the original values are greater than 70? ans=
uppose your statistics instructor gave six examinations during the semester. You received the following grades (percent...
uppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct): 79, 66, 81, 85, 89, and 77. Instead of averaging the six scores, the instructor indicated he would randomly select three grades and compute the final percent correct based on the three percents. a. How many different samples, without replacement, of three test grades are possible?      Different samples    c. Compute the mean of the sample means and compare it to the...
The professor of a Statistics class has stated that, historically, the distribution of test grades in...
The professor of a Statistics class has stated that, historically, the distribution of test grades in the course resembles a Normal distribution with a mean test mark of μ=61% and a standard deviation ofσ=9%. (a) What is the probability that a randomly chosen test mark in this course will be at least 73%? Answer to four decimals. (b) In order to pass this course, a student must have a test mark of at least 50%. What proportion of students will...
1a.) The following grades were obtained on the Research Methods course of students of the Urban...
1a.) The following grades were obtained on the Research Methods course of students of the Urban Studies Department at Stanford University (70, 90, 85, 70, 85, 60, 95, 50, 65, 70). There were 95 students in the class. Variance of the data set is: a.144 b.214 c.184 d.None of the above 1b.) The following grades were obtained on the Research Methods course of students of the Urban Studies Department at Stanford University (70, 90, 85, 70, 85, 60, 95, 50,...
A group of 5 statistics students receive the following grades on a test: 81, 74, 62,...
A group of 5 statistics students receive the following grades on a test: 81, 74, 62, 92, and 76. An intervention plan is used and the students increased their scores on a retest to: 85, 79, 75, 95 and 84. At the 0.05 significance level, is the intervention plan helpful in increasing the grades? a.    State the null and alternate hypotheses.                                    Ho :                                                                                                                   H1: m b. State the decision rule. c. Compute the value of the test statistic. d. Compute the...
Suppose that your statistics instructor gave six examinations during the semester. You received the following grades...
Suppose that your statistics instructor gave six examinations during the semester. You received the following grades (percentage correct): 66, 76, 88, 72, 85, and 68. Instead of averaging the six scores, the instructor indicated he would randomly select 4 grades and report that grade to the student records office. a. How many different samples, without replacement, of 4 test grades are possible? Different samples             b. Not available in Connect. c. Compute the mean of the sample means and...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT