Weights Weights

How do you work out the mean weight on a frequency table?

Marcus collected some pebbles.
He weighed each pebble.
The grouped frequency table gives some information about weights.

Weight (w grams) Frequency
50 < w < 60 5
60 < w < 70 9
70 < w < 80 22
80 < w < 90 27
90 < w < 100 17

Work out an estimate for the mean weight of the pebbles.

[55*5+65*9+75*22+85*27+95*17] / (5+9+22+27+17)

= (275+585+1650+2295+1615) / 80
= about 80 but use a calculator

Discover Weights Weights On eBay Below:

Soft Scuba Dive Weight Bags 1 ea 1lb 2lb 3lb and 4lb 10 lbs total
Soft Scuba Dive Weight Bags 1 ea 1lb 2lb 3lb and 4lb 10 lbs total
$37.95
Weight Belt Camo Textile Design
Weight Belt Camo Textile Design
$10.16
Soft Scuba Dive Weights Bags 2 ea 1lb 2lb 3lb 4lb and 5lb 30 lbs total
Soft Scuba Dive Weights Bags 2 ea 1lb 2lb 3lb 4lb and 5lb 30 lbs total
$109.95
Soft Scuba Dive Weight Bags 2 2lb and 2 3lb 10 lbs total
Soft Scuba Dive Weight Bags 2 2lb and 2 3lb 10 lbs total
$37.95
Spearpro Marseillaise Rubber Weight Belt Black
Spearpro Marseillaise Rubber Weight Belt Black
$55.00
3 Sea Pearl Soft Weight 4 lb TW12lb
3 Sea Pearl Soft Weight 4 lb TW12lb
$30.00
Scuba Weight Belt weights not included
Scuba Weight Belt weights not included
$4.43
Scuba Diving Dive Weight Belt Buckle Equipment Black WB30
Scuba Diving Dive Weight Belt Buckle Equipment Black WB30
$4.99
Soft Weight Lead BCD Belt Scuba Diving Free Dive 14lbs 2 5lbs 1 4lbs
Soft Weight Lead BCD Belt Scuba Diving Free Dive 14lbs 2 5lbs 1 4lbs
$53.50
Vintage Divers La Spirotechnique Scuba Diving Weight Belt Blue  Extra Weights
Vintage Divers La Spirotechnique Scuba Diving Weight Belt Blue Extra Weights
$12.00
Single 3lb Seasoft Soft Pro Scuba Ankle Weight
Single 3lb Seasoft Soft Pro Scuba Ankle Weight
$22.98
SpearFishing Free Dive Heavy Duty Rubber Weight Belt w SS Buckle
SpearFishing Free Dive Heavy Duty Rubber Weight Belt w SS Buckle
$23.98
Scuba Divers Plastic weight belt buckle dredging diving equipment WB0105 black
Scuba Divers Plastic weight belt buckle dredging diving equipment WB0105 black
$4.49
8 Pounds 8lbs of Soft Mesh Weights for Scuba Diving
8 Pounds 8lbs of Soft Mesh Weights for Scuba Diving
$16.00
8 Pounds 8lbs of Soft Mesh Weights for Scuba Diving Sea Pearls
8 Pounds 8lbs of Soft Mesh Weights for Scuba Diving Sea Pearls
$16.00
10 Pounds 10lbs of Soft Mesh Weights for Scuba Diving Sea Pearls
10 Pounds 10lbs of Soft Mesh Weights for Scuba Diving Sea Pearls
$19.00
Stainless Steel Weight Belt Keeper with D Ring Scuba Diving
Stainless Steel Weight Belt Keeper with D Ring Scuba Diving
$8.00
All Pro Aquatic Weight Adjustable Belt Weighted Traction Pool Exercise 10LB 9541
All Pro Aquatic Weight Adjustable Belt Weighted Traction Pool Exercise 10LB 9541
$48.99
SCUBA WEIGHT BELT
SCUBA WEIGHT BELT
$15.00
Scuba Diving Lead Weight Belt 18 Lbs total w metal buckle and belt
Scuba Diving Lead Weight Belt 18 Lbs total w metal buckle and belt
$35.55
lot of 2 Trident 10 Lbs Dive Belt Weight Snorkel Ten Pounds
lot of 2 Trident 10 Lbs Dive Belt Weight Snorkel Ten Pounds
$29.95
Plastic Buckle 2 Inches For Weight Belt Black Acetal Resists Strong Impacts
Plastic Buckle 2 Inches For Weight Belt Black Acetal Resists Strong Impacts
$3.90
Stainless Steel Buckles For Weight Belt 2 Inches Wide Pin Type
Stainless Steel Buckles For Weight Belt 2 Inches Wide Pin Type
$8.90
Scuba Diving Dive Stainless Steel Weight Belt Stopper Slider Keeper
Scuba Diving Dive Stainless Steel Weight Belt Stopper Slider Keeper
$9.90
Scuba Diving Stainless Steel Tri Slider Weight Belt Keeper
Scuba Diving Stainless Steel Tri Slider Weight Belt Keeper
$0.99
54mm Wide Stainless Steel Weight Belt Buckle for Scuba Diving Snorkeling
54mm Wide Stainless Steel Weight Belt Buckle for Scuba Diving Snorkeling
$2.32
Scubapro X Tek Counter Weight Pockets Pair
Scubapro X Tek Counter Weight Pockets Pair
$46.23
Scuba Diving Plastic Weights Belt Keeper Webbing Retainer Yellow
Scuba Diving Plastic Weights Belt Keeper Webbing Retainer Yellow
$2.99
Scuba Diving Heavy Duty 59 2 Weight Belt with Stainless Steel Buckle
Scuba Diving Heavy Duty 59 2 Weight Belt with Stainless Steel Buckle
$12.50
59 2 Scuba Diving Weight Belt Strap Equipment with Stainless Steel Buckle
59 2 Scuba Diving Weight Belt Strap Equipment with Stainless Steel Buckle
$12.67
Aqua Universal Weight Clip Black
Aqua Universal Weight Clip Black
$0.99
DIVER WEIGHT BAG AND 4 LBS WEIGHTS
DIVER WEIGHT BAG AND 4 LBS WEIGHTS
$35.00


Recently Bought Weights Weights:


soft scuba dive weight bags 2 5lb 10 lbs total, riffe rubber weight belt with buckle for freediving and spearfishing, apeks wsx trim weight pockets, xs scuba single weight pocket new free shipping, 2x scuba diving weight belt slide keeper 112 webbing retainer stopper blk, 6x scuba diving dive plastic weight belt slide 112 webbing stopper keeper, 2pcs scuba diving plastic weight belt slide keeper retainer for 2 webbing, 6pcs plastic weight belt keeper retainer stopper for 2 webbing scuba diving, 2pcs scuba diving weight belt slide keeper 2 webbing retainer stopper black, 6x weight belt slide standard 2 webbing plastic scuba diving stopper keeper, new 2x scuba diving plastic weight belt slide keeper 112 webbing retainer, 6pcs plastic weight belt keeper 112 webbing retainer stopper scuba diving, soft weight dive belts scuba snorkeling 52 21lbs 47 18lbs sport products tampa, 4 quantity of sea pearls soft 3 lb weights burgundy, 59 2 scuba diving weight belt equipment with stainless steel buckle pink, reduced scuba choice spearfishing free dive heavy duty rubber weight belt, 59 2 3mm scuba diving heavy duty strong weight belt replacement webbing, dive weight scuba block for bcd or belt 18 pounds 10 pieces 4x1s , white stag scuba divers weight belt with 15 lbs weights excellent cond, scuba diving weight harness seal products, scuba diving weight lead shot bags soft pouch snorkeling psi pro dive 1kg 22 lb, 5cm width scuba diving plaint webbing weight belt with stainless buckle , bcd weight belt with 5 pockets with buckle and 51 webbing, scuba diving 20 pound weight belt, 4 lbs lead scuba dive belt weight snorkel four pounds, 8 lbs lead scuba dive belt weight snorkel eight pounds, 9 lbs lead scuba dive belt weight snorkel nine pounds, 10 lbs lead scuba dive belt weight snorkel ten pounds, scuba diving weight belt 18 lbs, 14 lbs vintage diving scuba marine uncoated weights lead, 2 pcs scuba diving dive plastic weight belt keeper stopper trislider black, 6pcs scuba diving dive plastic weight belt slide 2 webbing stopper keeper, 2x plastic weight belt slide standard 112 webbing keeper for scuba diving, 6x scuba diving plastic weight belt slide keeper retainer for 112 webbing, sea pearls scuba diving soft bags pouch weight belt no weights 4 pouches bag, pathos silicon white weight belt diving spearfishing freediving e981, pathos latex camu weight belt diving spearfishing freediving e980, sku325 cressi scuba diving weight belt amp; weight belt keepers, sku324 cressi scuba diving weight belt amp; weight belt keepers, sku321 cressi scuba diving weight belt amp; weight belt keepers, sku323 cressi scuba diving weight belt amp; weight belt keepers, sku322 cressi scuba diving weight belt amp; weight belt keepers, sku327 cressi scuba diving weight belt amp; weight belt keepers, tekna 42 long weight belt w5 weights 1lb 11oz each 85lb amp; attach shackle, standard weight belt 2 wide with proper buckle for waist up to 42, weight belt with five zippered pockets amp; proper buckle for waist up to 36, scuba six lead weights with total weight 101 lb, scuba six lead weights for 1 lb 11 oz each 102 lb compact shape, scuba dive hard weight lead 3 pounds, spare nylon scuba diving weight belt pocket with quick release buckle black, scuba diving weight belt pocket with quick release buckle 55 x 47 black, scuba weights, scuba diving spare weight belt pocket diving accessories 55 x 47 black, zeagle 6 lb 272 kg trim weight pouch each, dive rite 4 lbs travel weight pocket, 2pc plastic weight belt keeper 2 webbing retainer stopper scuba diving gear, 10 pieces weight belt webbing keeper retainer slide serrated scuba diving



Comments are closed.