Question

Consumer Reports posts reviews and ratings of a variety of products on its website. The following is a sample of 20 speaker systems and their ratings. The ratings are on a scale of 1 to 5, with 5 being best.

Speaker Rating Speaker Rating

Infinity Kappa. 6.1 4.00 ACI Sapphire III 4.67

Allison One 4.12 Bose 501 Series 2.14

Cambridge Ensemble II 3.82 DCM KY-212 4.09

Dynaudio Contour 1.3 4.00 Eosone RSF 1000 4.17

Hsu Rsch. HRSW 12V 4.56 Joseph Audio RM7 si 4.88

Legacy Audio Focus 4.32 Martin Logan Aerius 4.26

Mission 73Ii 4.33 Omni Audio SA 12.3 2.32

PSB 400i 4.50 Polk Audio RT 12 4.50

Snell Acoustics D IV 4.64 Sunfire True Subwoofer 4.17

Thiel CS 1.5 4.20 Yamaha NS- A636 2.17

- Compute the mean and the median.
- Compute the first and third quartiles.
- Compute the standard deviation.

I just need Part C

Answer #1

**Solution:**

The formula for finding the standard deviation is:

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 7 minutes ago

asked 7 minutes ago

asked 12 minutes ago

asked 21 minutes ago

asked 28 minutes ago

asked 33 minutes ago

asked 41 minutes ago

asked 43 minutes ago

asked 46 minutes ago

asked 1 hour ago

asked 1 hour ago