Given the following frequency distribution, determine the standard deviation. Scores Frequency 51-60 4 61-70 9. 71-80 81-90 91-100 6 *
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- Using your calculator, find the range and standard deviation, round to two decimals places:The table below gives the number of hours spent watching TV last week by a sample of 24 children. 71 23 53 59 75 72 34 26 52 78 38 50 65 83 54 87 60 84 23 83 90 28 94 10 Range = Standard Deviation =Using your calculator, find the range and standard deviation, round to two decimals places:The table below gives the number of hours spent watching TV last week by a sample of 24 children. 75 84 49 32 59 48 69 81 34 67 78 50 46 48 83 32 29 54 21 83 47 58 91 15 a) Range = b) Standard Deviation =The sample mean amount of savings is $
- The estimated distribution (in millions) of the population by age in a certain country for the year 2015 is shown in the pie chart. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Use 70 as the midpoint for "65 years and over." I Under 4 years: 24.2 5-14 years: 46.5 15-19 years: 20.7 O 20-24 years: 24.4 25-34 years: 55 35-44 years: 37.9 O 45-64 years: 86.2 O 65 years and over: 57.7 The sample mean is x = (Round to two decimal places as needed.)What is the standard deviation?The scores for the top 10 ice sculptures in an ice sculpture competition can be found below. Score 174 179.7 172.8 180.6 174.7 174.6 178.5 174.6 179.1 171.8 Estimate the standard deviation using the range rule of thumb:
- IQ scores are normally distributed with a mean of 100 and standard deviation 16. Calculate the z-score for an IQ of 76. Include one decimal place in your answer. Add your answerEvery year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results are given in the frequency distribution: Aptitude Score 0 1 2 3 4 5 Frequency 1 6 4 1 5 2 Calculate the sample standard deviation of this data. Answer using two decimal places.The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. W Click the icon to view the pie chart. ..... 5-9 12 10-14 23 15-19 16 20-24 18 25-29 12 30+ 4 Find an approximation for the sample mean. x= 16.6 (Type an integer or decimal rounded to the nearest tenth as needed.) Find an approximation for the sample standard deviation. s= (Type an integer or decimal rounded to the nearest tenth as needed.)
- Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score Frequency 90 1 80 4 70 8 60 5 50 3 40 2 30 1 0 4 Is there an easy way to get it?A distribution has mean 100 and standard deviation 3. What is the largest percent of the data that is guaranteed to be between 40 and 160 93.75 96 97.44 99.75 99.99Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score Frequency 90 1 80 4 70 7 60 6 50 3
