Q2) The following is the frequency distribution of temperature of some certain days: Temperature: 0-10 Frequency: a) 10-20 20 -30 30-40 40-50 6 3 7 2 Calculate mean and SD of the above frequency distribution. Write the formula of mean and SD. b) c) Write a summary based on these two measures.
Q2) The following is the frequency distribution of temperature of some certain days: Temperature: 0-10 Frequency: a) 10-20 20 -30 30-40 40-50 6 3 7 2 Calculate mean and SD of the above frequency distribution. Write the formula of mean and SD. b) c) Write a summary based on these two measures.
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Transcribed Image Text:Q2) The following is the frequency distribution of temperature of some certain days:
Temperature: 0-10
Frequency:
a)
b)
c)
10-20
20 -30
30-40
40-50
6
3
7
2
Calculate mean and SD of the above frequency distribution.
Write the formula of mean and SD.
Write a summary based on these two measures.
Transcribed Image Text:CUMULATIVE PROBABILITIES FOR THE STANDARD NORMAL DISTRIBUTION
Cumulative
probability
Entries in the table
give the area under the
curve to the left of the
z value. For example, for
z = 1.25, the cumulative
probability is .8944.
.00
.01
.02
.03
.04
.05
.06
.07
.08
09
5040
.5080
.5120
.5199
.5596
.0
5000
.5160
.5239
.5279
5319
5359
5438
.5832
.5478
.5871
.5557
.5948
.6331
.1
5398
.5517
5636
.5675
.5714
5753
.2
.3
5910
.6293
.6664
.5793
$987
.6368
.6736
.6026
.6064
.6443
6103
.6141
.6217
.6591
.6179
.6255
.6628
.6406
.6480
.6517
.4
.6554
.6700
.6772
.6808
.6844
.6879
.5
.7088
.6950
.7291
.7611
.6915
.6985
.7019
.7054
.7123
.7157
.7190
4כרה
.7357
.7673
.7967
,7389
.7486
.7794
.6
.7257
.7580
.7881
.7324
.7422
.7454
.7517
.7549
.7
.7823
.8106
.8365
.7642
.7704
.7734
.7764
.7852
.7910
.7939
7995
.8078
.8340
.8
8023
8051
8133
.9
8159
.8186
.8212
.8238
.8264
.8289
.8315
8389
.8413
.8643
.8849
.8438
.8665
.8869
.8485
.8708
1.0
.8461
8554
.8508
.8729
.8925
.8531
.8577
.8599
8621
1.1
.8686
.8888
.8749
8770
.8790
.8810
.8830
1.2
.8907
.8944
.8962
.8980
.8997
.9032
.9192
.9049
.9207
9099
9251
9115
9265
9131
9279
.9162
9306
.9015
9177
9319
1.3
.9066
.9082
9147
1.4
.9222
9236
9292
.9345
.9357
9474
1.5
.9332
.9370
.9484
.9582
.9382
9406
.9429
.9535
.9625
9441
.9545
.9394
.9418
.9525
.9616
.9693
L6
.9452
9505
9515
9463
.9564
9649
9495
9554
.9641
1.9
1.7
.9573
9591
9599
.9608
9633
1.8
.9656
.9664
.9671
.9678
.9686
9699
9706
.9713
.9719
.9726
.9732
.9738
.9744
9750
.9756
9761
.9767
.9783
.9788
.9793
9838
.9798
9842
.9803
.9846
9808
.9812
.9854
2.0
כ977.
.9778
.9817
.9857
.9890
2.1
.9821
.9826
9830
9834
9850
2.2
9875
.9904
.9861
.9864
.9868
.9871
.9878
.9881
.9884
9887
.9893
.9918
2.3
.9896
.9898
.9901
.9906
.9911
.9913
.9934
.9909
.9916
2.4
9920
.9922
.9925
.9927
.9929
.9931
9932
9936
.9940
.9943
.9945
9959
.9969
.9946
9960
.9970
2.5
.9938
9953
.9941
.9951
9963
.9948
.9949
.9952
2.6
9955
9956
9957
.9968
.9961
.9962
.9964
9965
.9974
.9967
.9976
2.7
.9972
.9979
.9973
.9980
9966
.9971
.9974
2.8
.9975
.9977
.9977
.9978
.9979
.9981
2.9
.9981
.9982
.9982
.9983
.9984
.9984
.9985
.9985
.9986
.9986
3.0
.9987
.9987
.9987
.9988
.9988
.9989
.9989
.9989
9990
.9990
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