A barista counts espresso shots in five consecutive hours: 4, 7, 8, 10, 11. Compute the sample standard deviation $s$, rounded to two decimal places.

A clinic records patient wait times in minutes: 12, 15, 15, 18, 20, 22. Compute the sample standard deviation $s$, rounded to two decimal places.

A greenhouse measures seedling heights in centimeters: 24, 26, 27, 29, 30. Compute the sample standard deviation $s$, rounded to two decimal places.

A recycling club weighs paper collected over six days in kilograms: 8, 10, 13, 14, 15, 18. Compute the sample standard deviation $s$, rounded to two decimal places.

A track coach records five sprint times in seconds: 51, 53, 54, 58, 59. Compute the sample standard deviation $s$, rounded to two decimal places.

A city surveys household water use in liters for six homes: 110, 115, 117, 119, 124, 125. Compute the sample standard deviation $s$, rounded to two decimal places.

A soccer team records goals scored in five matches: 0, 1, 2, 2, 5. Compute the sample standard deviation $s$, rounded to two decimal places.

A weather station records rainfall in millimeters over six days: 3, 4, 6, 7, 10, 12. Compute the sample standard deviation $s$, rounded to two decimal places.

A teacher records six quiz scores in points: 6, 7, 7, 9, 11, 14. Compute the sample standard deviation $s$, rounded to two decimal places.

A shipping clerk weighs five parcels in grams: 480, 490, 500, 510, 520. Compute the sample standard deviation $s$, rounded to two decimal places.

A transit office records bus arrival delays in minutes: 1, 2, 2, 4, 6, 6, 7. Compute the sample standard deviation $s$, rounded to two decimal places.

A biologist measures six fish lengths in centimeters: 18, 20, 21, 22, 25, 26. Compute the sample standard deviation $s$, rounded to two decimal places.

A quality inspector reports that cereal box fill weights in a sample have variance $s^2=40.96$ grams squared. What is the sample standard deviation, to one decimal place?

A clinic reports that a sample of body temperature errors has standard deviation $s=1.8$ °C. What is the sample variance, to two decimal places?

An orchard sample has apple mass variance $s^2=144$ grams squared. What is the sample standard deviation, to one decimal place?

A science fair team finds that model-car jump lengths have sample standard deviation $s=4.5$ cm. What is the sample variance, to two decimal places?

A factory reports that bolt length errors in a sample have variance $s^2=0.64$ millimeters squared. What is the sample standard deviation?

A lifeguard records swim time standard deviation $s=2.7$ seconds for a sample of swimmers. What is the sample variance, to two decimal places?

A school nurse reports that backpack masses in a sample have variance $s^2=2.25$ kilograms squared. What is the sample standard deviation?

A delivery company finds standard deviation $s=6.0$ km for a sample of route distances. What is the sample variance, to one decimal place?

Two soccer teams record shots on goal in five games. Falcons: 6, 7, 8, 9, 10. Tigers: 2, 5, 8, 11, 14. Both means are 8 shots. Which team has the larger sample standard deviation?

Two plant trays have seedling heights in centimeters. Tray A: 10, 10, 12, 14, 14. Tray B: 8, 11, 12, 13, 16. Both means are 12 cm. Which tray has the larger sample standard deviation?

Two bus routes record morning rider counts. Route A: 26, 28, 30, 30, 32, 34. Route B: 20, 25, 30, 30, 35, 40. Both means are 30 riders. Which route varies more?

Two swimmers record lap times in seconds. Swimmer A: 36, 38, 40, 42, 44. Swimmer B: 32, 39, 40, 41, 48. Both means are 40 seconds. Which swimmer has the larger sample standard deviation?

Two robots travel distances in centimeters. Robot A: 20, 25, 30, 35, 40. Robot B: 27, 29, 30, 31, 33. Both means are 30 cm. Which robot has the larger sample standard deviation?

A farm compares egg masses in grams. Carton A: 52, 56, 60, 64, 68. Carton B: 58, 59, 60, 61, 62. Both means are 60 grams. Which carton has the larger sample standard deviation?

Two quiz sections have scores in points. Section A: 70, 75, 80, 85, 90. Section B: 78, 79, 80, 81, 82. Both means are 80 points. Which section has the larger sample standard deviation?

Two printers count labels per minute. Printer A: 16, 19, 19, 21, 21, 24. Printer B: 17, 17, 20, 20, 23, 23. Both means are 20 labels. Which printer has the larger sample standard deviation?

Two elevators record passenger masses in kilograms. Elevator A: 45, 48, 48, 52, 52, 55. Elevator B: 46, 46, 49, 51, 54, 54. Both means are 50 kg. Which elevator has the larger sample standard deviation?

Two delivery vans record fuel use in liters. Van A: 6, 9, 12, 15, 18. Van B: 10, 11, 12, 13, 14. Both means are 12 liters. Which van has the larger sample standard deviation?

Every student in a class has 5 points added to an exam score. The original scores have mean 74 points and standard deviation $s=8.2$ points. What is the standard deviation of the adjusted scores?

A lab doubles every measured plant height from a half-scale drawing to actual size. The original mean is 18 cm and $s=2.6$ cm. What is the new standard deviation after multiplying each height by 2?

A teacher subtracts 3 points from every project score. The original project scores have mean 86 points and standard deviation $s=6.5$ points. What is the new standard deviation?

A coach records race times in minutes, then converts each time to seconds by multiplying by 60. The original mean is 4.5 minutes and $s=0.4$ minute. What is the new standard deviation?

A cafeteria adds 0.5 liter of water to every soup pot. The original pot volumes have mean 8.0 liters and standard deviation $s=1.1$ liters. What is the new standard deviation?

A survey records rope lengths in centimeters, then converts every length to meters by multiplying by 0.01. The original mean is 250 cm and $s=40$ cm. What is $s$ in meters?

A packaging model triples every package mass. The original package masses have mean 12 kg and standard deviation $s=1.4$ kg. What is the standard deviation after each mass is multiplied by 3?

A thermometer correction adds 1.5 °C to every incubator temperature. The original temperatures have mean 22 °C and standard deviation $s=0.8$ °C. What is the new standard deviation?

A map scale changes every trail distance by multiplying by 0.5. The original trail distances have mean 10 km and standard deviation $s=2.4$ km. What is the new standard deviation?

A grading system converts every lab score $x$ to $10x+5$ points. The original lab scores have mean 7.0 points and standard deviation $s=1.2$ points. What is the new standard deviation?