Stock analysis. The price-eaming ratios of 100 randomly selected stocks from the New York Stock Exchange are: a. Find the mean of the price-earning ratios. (Type an integer or a decimal. Round to two decimal places) b. Find the standard deviation of the price-earning ratios. (Type an integer or a decimal. Round to two decimal places.) Interval -05-45 4.5-9.5 9.5-145 145-195 19.5-24.5 185-245 24.5-29.5 29.5-34.5 ---30183 Frequency

Q: Score 15- 12- 6. 0. 9. 8. 9. 10 11 12 Ico 6. 3. Frequenoy

A: Form the given graph we have to find the standard deviation

Q: si fi 4 6 8 7 11 4 O A) 2,78 B) 7,29 OC) 3,32 D) 59,61 O E) 7,72

A:

Q: 20 40 60 80 100

A: The above graph is approximately normal. So, for mean we see that where there is symmetry about the…

Q: dard deviation for age. Age Number (millions) 25-34 35-44 45-54 55-64 29.4 34.8 36.1 20.4

A: Given The following data represent the number of people aged 25 to 64 years covered by health…

Q: Ultrasound was used to gather the accompanying corrosion data on the thickness of the floor plate of…

A:

Q: Interval Frequency A sample of 35 households from a survey generates the following frequency table…

A:

Q: 2. Suppose that a continuous random variable X has PDF f(x) = }7 (1 – x²) -1<x<1 else

A:

Q: GET THE STANDARD DEVIATION

A: We have  intervals of age group as, .The sample mean for  age group. The total sample mean, =2.20.

Q: Using your calculator, find the range and standard deviation, round to The table below gives the…

A: We know that Range : It the difference between the maximum value of the data set to the minimum…

Q: Compute the mean and standard deviation for the sample below, rounding each to the nearest…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: What is the mean and standard deviation?

A:

Q: Calculate the mean and the standard deviation.

A: The mean is also known as the average. It includes all the observations in the data set. It includes…

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: Given, The probability distribution of the number of adults in a group of 5 who reported…

Q: Listed below are measured amounts of caffeine (mg per 12oz of drink) obtained in one can from each…

A:

Q: Interval 31-40 41-50 51-60 61-70 71-80 81-90 91-100 Frequency 3 4 6. 7 17 8

A: Given  Interval Frequency  31-40 3 41-50 4 51-60 6 61-70 7 71-80 17 81-90 5 91-100…

Q: A new Economic / Social Conservatism Scale has scores between 0 and 30 (0 being extreme liberal, 30…

A: Solution Given that, A new Economic / Social Conservatism Scale has scores between 0 and 30 (0 being…

Q: Gender Hours of sleep E female 8. female female 6. female 6. female female female 6. female 8.…

A: We have given the data of Gender and hours of sleep. We have to find the mean and standard…

Q: Given the following set of data, determine 1, 2, 3, 4, 5, 4, 3, 2, 1, 0, 1

A:

Q: Find variance and standard deviation

A: From the given data we have the computations as, Class boundaries Xi Frequency (fi) fiXi…

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

A: where,  f is frequency of class x is midpoint Midpoint = x = Lower limit of class + upper limit of…

Q: Find the mean and standard deviation interpretation

A: * SOLUTION : -   * Given that,

Q: ind standard deviatio

A: Provided data is, High school students across the nation compete in a financial capability challenge…

Q: The following data represent the high-temperature distribution for a summer month in a city for some…

A: classfrequency50-59260-6931070-79143480-89154690-99239100-1099sum : 3540Find mean and standard…

Q: Use the graph to identify the values of mean and standard deviation

A: From the given graph we know that μ=530μ+σ=545    .....(1)μ-σ=515    ......(2)

Q: Compute for the mean and standard deviation

A:

Q: 4) On an exam with a mean of 75, you score an 80. Would you be in a better position if SD = 2 or SD…

A: For the distribution of the score in the exam, it is given that:The mean, μ=75Individuals's raw…

Q: (Round calculated results to the hundredth (2 place to the right of beyond that unless otherwise…

A: The given data is as follows, Accept rate Grad rate 5 96 5 97 6 95 8 98 10 96 10 94…

Q: The following data represent the number of people aged 25 to 64 years covered by health insurance…

A: We have given that,  Class (age) :- 25-34, 35-44, 45-54, 55-64 Frequency (number):- 26.2, 36.7,…

Q: 1 2 3 4 5 6 7 XX 8 A B с College ID Accept rate (%) Grad rate (%) 1 5 96 5 97 6 95 8 98 10 96 10 94…

A: Given that: College ID Accept rate (%) Grad rate (%) 1 5 96 2 5 97 3 6 95 4 8 98 5 10…

Q: Calculate the standard deviation of the data.

A: The given data is as follows:…

Q: 10 11 12 13 14 P(X) 0.4 0.2 0.2 0.10.1

A: Given data,

Q: Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000…

A: Let X be the random variable having probability mass function is,  Defects (x)  0 1 2 3 4 5…

Q: Find the mean and standard deviation for the individualized instruction scores. Scores…

A: From the given information, Consider, X =Scores and Y = Individualized Instruction x f 50-59 2…

Q: Calculate the standard deviation of the data shown. X 29.2 14.3 5.4 7.6 19.3 14.4 Round your answers…

A: x x2 29.2 852.64 14.3 204.49 5.4 29.16 7.6 57.76 19.3 372.49 14.4 207.36 --- ---…