6.Hours Slept6.58.257.57.257.257.56.57.755.257.7576.756.257.577.256.757.56.756.6.587.254.75n =5 number summary:IQR =Range =Outliers?If yes, what numbers are outliers?

Solution-: Given data of hour slept. We want to find, (a) n=?,x¯=?,s=? (b) 5 number summary (c)…

Answered: 6. Hours Slept 6.5 8.25 7.5 7.25 7.25…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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= DESCRIPTIVE STATISTICS Using the IQR to find outliers in a dat... The last 11 calls to a customer support line had the following lengths (in minutes). 52, 53, 53, 54, 55, 56, 60, 62, 63, 64, 99 Complete the parts below to identify any outliers. 9₁ = 0 93= 0 (b) Find the interquartile range (IQR) of the data set. (a) Let Q₁ be the lower quartile and Q3 be the upper quartile of the data set. Find Q, and Q, for the data set. IQR = [ Explanation Lower boundary: Upper boundary: Outliers: X (c) Calculate a lower boundary using Q₁-1.5 IQR. Calculate an upper boundary using Q3 +1.5-IQR. (Note that 1.5-IQR means 1.5 times the IQR.) Check X 2027 X (d) Any values less than the lower boundary or greater than the upper boundary are considered outliers. Identify all the outliers of the data set. If there is more than one outlier, separate them with commas. If there are no outliers, click "None". 0,0,... None 2/5 G X Dianne V G Español ights Reserved. Terms of ? Az
any outliers, (Clearly show calculations for upper and lower fence and justify if outliers exist.) V b Can you give a possible reason for why the outlier occurred? The ages of a team of female gymnasts are given in this data set: 18, 23, 14, 28, 21, 19, 15, 32, 17, 18, 20, 13, 21 Use CAS to determine the values of Q, and Q. a Use these values to justify whether any outliers exist (show calculations) and list them clearly. Draw a box plot to summarise the data, marking outliers if they exist. You may use your CAS calculator to help you with this. Make sure your boxplot has a clearly labelled number line, and all values are represented accurately.
When people were asked how much money they spent yesterday (in dollars), this was their data: 7 20 1 34 50 20 60 25 38 30 20 350 50 11 30 100 167 20 18 20 120 65 60 30 3 1000 100 32 20 300 70 0. Find the minimum and maximum of the data. 1. Find the apparent outliers of the data. 2. Create a stemplot of values up to 167, and put outliers at the end. 3. Using a "range" of 0-167, find a reasonable interval size ( ). ": 4. Make a frequency table of the data, with a first interval of 5. Create a histogram of the data from the frequency table. (Put your outliers in a box.) 6. Check your work by replicating the histogram on your calculator.
a) Studies have shown that a positive association exists between educational level and annual salary; in other words, people with more education tend to make more money. i. Does this finding mean that more education causes a person to make more money? Explain your answer. ii. Do you think there is a causal relationship between educational level and annual salary? Explain your answer.
Are cigarettes bad for people? Cigarette smoking involves tar, carbon monoxide, and nicotine (measured in milligrams). The first two are definitely not good for a person's health, and the last ingredient can cause addiction. Use the data in the table above to make a stem-and-leaf display for milligrams of tar per cigarette smoked. (Enter NONE in any unused answer blanks.) Are there any outliers? A. Yes, 1.0 may be an outlier. B. No, there are no outliers. C. Yes, 29.8 may be an outlier.
Below are the typing speeds (words per minute) for 22 secretarial applicants of an international cosmetic company 68 72 91 47 52 75 63 55 65 35 69 70 84 45 58 61 69 22 46 55 66 71 1 Find the mean and the median of the data. 2 Calculate the outlier interval for the data. Are there any outliers? 3 Graph the distribution of typing speeds as a stemplot: (by hand) 4 Graph the distribution of typing speeds as a dotplot. (by hand) can you please help me in question 1- 4 by hand.
Use the following data set to answer Questions #12 and #13. 65 55 65 54 60 57 55 58 63 58 57 65 57 58 84 Are there any outliers? There exists at least one outlier in the data set at 84. There exists outliers in the data set at 55 and 84. O There are no outliers in the data set.
Emily walks every day, and she keeps a record of the number of miles she walks each day. The histogram and five-number summary below were created from the recorded miles for a random sample of 25 of the days Emily walked. Frequency S 15 10 0 1 2 3 4 5 678 Miles Walked Minimum Q1 Median Q3 Maximum 1.4 2.6 3.25 3.8 7.5 Recall that a method for identifying an outlier is to investigate whether there is evidence that a value might have come from a population with a mean different from the mean of the population of the other values. The following hypotheses can be used for such an investigation. = a Hạ : # # #x (d) Calculate the value of the test statistic used for evaluating the hypotheses.
You are interested in how many contacts older adults have in their smartphones. Here are data on the number of contacts for a random sample of 30 elderly adults with smartphones in a large city. 7 20 24 25 25 28 28 30 32 35 42 43 44 45 46 47 48 48 50 51 72 75 77 78 79 83 87 88 135 151 Are there any outliers? Enter the boundary for low and high outliers below, then determine if the data set has any outliers. Do not round the boundary values.
The 5 numbers are 1, 6, 9, 11.25, and 28. Draw a Box Plot for this data. (Hint: Remember how to determine and show outliers in a box plot. See Fig. 4.3.3 on p. 184 in the textbook for an example.) Hints: The box extends from Q 1 to Q3 Draw a line through the box at the median Use the IQR method to determine outliers Outliers are any values less than Q1 - (1.5 x IQR) or greater than Q 3 - (1.5 x IQR) Show any outliers with Draw a whisker from the left side of the box to the lowest value that is NOT an outlier Draw a whisker from the right side of the box to the highest value that is NOT and outlier. 10
5 20 22 27 30 17 12 15 16 9 9 18 13 12 28 19 3. Compute the five-number summary and the interquartile range. Any outliers? 12 in the
Here are the scores of 10 students in an introductory statistics course: 55 74 75 81 83 85 92 93 93 97 Find the interquartile range and use the 1.5 x IQR rule to check for outliers. How low would the lowest score need to be for it to be an outlier according to the rule?

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6. Hours Slept 6.5 8.25 7.5 7.25 7.25 7.5 6.5 7.75 5.25 7.75 7 6.75 6.25 7.5 7 7.25 6.75 7.5 6.75 6 6.5 8 7.25 4.75 n = 5 number summary: IQR = Range = Outliers? If yes, what numbers are outliers?