2. Using the grouped data below, answer the following correctly. (- Scores of 50 students in a 75-item Mathematics exam Scores LB F cf (<) X fx XX- XX- 22-29 10 30-37 16 38-45 10 46-53 5 54-61 3 62-69 5 70-77 1 50 a. Range ( b. Interquartile deviation, Midhinge and Quartile deviation c. Mean deviation Total fxx-

Q: Summarize the meaning of the standard deviation within the following graph in one sentence.

A: Given that the standard deviation is 1.669.

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A: score mid point(xi) frequency (fi) fixi 60-64 62 10 620 65-69 67 6 402 70-74 72 2 144 75-79…

Q: INSTRUCTIONS: Answer any FOUR (4) questions. QUESTION 1 Table 1 provides sample data concerning the…

A: What is Mean?Mean is the most commonly used measure of central tendency. It actually represents the…

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A: Mean is 13.1Standard deviation is 7.4154 Explanation:The given class interval frequency distribution…

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Q: QI/ For the following data find: a. Mode b. Median c. Standard deviation Class 25-30 30-35 35-40…

A: Given: N=105 Class Midpoint Frequency Cumulative frequency 25-30 27.5 2 2 30-35 32.5 8 10…

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A: Given that    a...We have to test hypothesis for the claim that population mean is different than 1…

Q: only part 4.

A: If the sample size increases from 8, then the standard deviation, σ decreases.

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A:

Q: 1. The following data set of rental prices are given: 550, 480, 580, 600, 590, 550, 450. What are…

A: (1) The value of mean is

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A:

Q: Which of the following is not a measure of dispersion in a set of data? O standard deviation O…

A: Remark:  A measure of dispersion for a data set helps us to know about the spread of the data set.

Q: A study was done of 6 patients admitted to a hospital.   Their ages (x) and systolic blood pressure…

A: Given: n = 6 Formula Used: Standard error Se = S∑Xi-X2 Where, S = Sy2-b2Sx2n-1n-2 b =…

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A: variability : it describes mainly how far the data is from each other. Measure of variability :…

Q: 2. The Assignment 1 marks for several groups have come in and the group sizes, means and standard…

A: Group No.Group sizeMeanSD11075428892312816

Q: How will you evaluate the MID-RANGE from the following series of data: 15,17,13,16,12,15,18,19,22,20…

A: Given: Data, X 15 17 13 16 12 15 18 19 22 20

Q: professor who teaches a large introductory statistics class (197 students) with eight discussion…

A:

Q: which of the following statistics are preserved when a data set is shifted by a constant value?…

A: From the above given data the following solution is provided below:

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A:

Q: ****For the following data Size range (um) Frequency 20-39 2 40-59 32 60-79 64 80-99 48 100-119 30…

A: Given: Frequency distribution for Size range.The first column contains the intervals for size ranges…

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Q: Table 1: Bivariate Correlations for the following variables: income, number of siblings, education,…

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Q: 1. Tabel : Frequency Distribution Interval Frequency 11 - 20 21 - 30 31 - 40 41 - 50 51 - 60 3 6 5 4…

A: Given data Interval  Frequency (f)  Midpoint (x)  X2 f.x f.X2 11 - 20  3 11+202=15.5 15.52 =…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Tax rate Freq(f) x xf x^2 x^2*f 0.00 - 0.49 7 0.245 1.715 0.060025 0.420175 0.5 - 0.99 12 0.745…

Q: According to her doctor, Mrs. Brown's cholesterol level is higher than only 15% of the females aged…

A: Z = x- μσ~ N(0,1)

Q: (c) Table 1 shows the daily income of fruit sellers. 100 120 120 110 200 180 170 160 145 120 Table 1…

A:

Q: For this grouped data set: Scores      |      Frequencies 30-34        |      7 25-29        |…

A:

Q: Data on GNP per capita and Birth Rate (births per thousand inhabitants) for a sample of 14 countries…

A: from the above table correlation coefficient ( r ) = -0. 7306 ..... ( up to 4 decimal places ) R -…

Q: A Calculate the mean deviation and its coefficient from the following data: Class AnFrequency…

A: Here,  N= 92  ,   let    A = 45  ,   class size (h) = 10 Mid value (x) = (lower class - upper class)…

Q: he scores on a statistics final in a large class were normally distributed with a mean score of 72…

A: Answer:- Given, A normal distribution with a mean score μ =72 and a standard deviation σ = 8.…

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A: Given : Data represents the classes of age and their corresponding frequency.  From the provided…

Q: The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

A:

Q: None

A: (a) Five-Number Summary and IQR The data set is: 9, 7, 2, 3, 7, 5, 3, 4, 6, 6, 2, 0 Order the data:…

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A: Standard deviation: Stan. deviation shows how far the observations are form the mean of the data.…