Average Nominal Hourly Earnings. An economist is examining wage growth in the United States. She has collected data on average nominal hourly earnings for workers in the United States between 2006 and 2020, which are shown in the following chart (data is also below). Her conclusion is that hourly earnings for workers in the United States have been steadily growing since 2006.

a) How might this conclusion be incorrect?

b) How can she modify these data to investigate the appropriateness of this conclusion?

Date	Average Nominal Hourly Earnings ($)	Price Index
3/1/2006	20.04	199.700
4/1/2006	20.17	200.700
5/1/2006	20.13	201.300
6/1/2006	20.22	201.800
7/1/2006	20.30	202.900
8/1/2006	20.31	203.800
9/1/2006	20.41	202.800
10/1/2006	20.44	201.900
11/1/2006	20.48	202.000
12/1/2006	20.57	203.100
1/1/2007	20.59	203.437
2/1/2007	20.67	204.226
3/1/2007	20.72	205.288
4/1/2007	20.79	205.904
5/1/2007	20.84	206.755
6/1/2007	20.95	207.234
7/1/2007	20.96	207.603
8/1/2007	21.00	207.667
9/1/2007	21.04	208.547
10/1/2007	21.06	209.190
11/1/2007	21.12	210.834
12/1/2007	21.18	211.445
1/1/2008	21.19	212.174
2/1/2008	21.26	212.687
3/1/2008	21.36	213.448
4/1/2008	21.37	213.942
5/1/2008	21.47	215.208
6/1/2008	21.52	217.463
7/1/2008	21.59	219.016
8/1/2008	21.70	218.690
9/1/2008	21.72	218.877
10/1/2008	21.76	216.995
11/1/2008	21.88	213.153
12/1/2008	21.94	211.398
1/1/2009	21.97	211.933
2/1/2009	21.99	212.705
3/1/2009	22.06	212.495
4/1/2009	22.09	212.709
5/1/2009	22.10	213.022
6/1/2009	22.13	214.790
7/1/2009	22.18	214.726
8/1/2009	22.23	215.445
9/1/2009	22.26	215.861
10/1/2009	22.31	216.509
11/1/2009	22.36	217.234
12/1/2009	22.36	217.347
1/1/2010	22.41	217.488
2/1/2010	22.45	217.281
3/1/2010	22.45	217.353
4/1/2010	22.49	217.403
5/1/2010	22.53	217.290
6/1/2010	22.53	217.199
7/1/2010	22.59	217.605
8/1/2010	22.62	217.923
9/1/2010	22.67	218.275
10/1/2010	22.74	219.035
11/1/2010	22.73	219.590
12/1/2010	22.76	220.472
1/1/2011	22.85	221.187
2/1/2011	22.87	221.898
3/1/2011	22.87	223.046
4/1/2011	22.92	224.093
5/1/2011	22.99	224.806
6/1/2011	23.01	224.806
7/1/2011	23.10	225.395
8/1/2011	23.07	226.106
9/1/2011	23.11	226.597
10/1/2011	23.21	226.750
11/1/2011	23.18	227.169
12/1/2011	23.21	227.223
1/1/2012	23.24	227.842
2/1/2012	23.27	228.329
3/1/2012	23.36	228.807
4/1/2012	23.39	229.187
5/1/2012	23.39	228.713
6/1/2012	23.46	228.524
7/1/2012	23.51	228.590
8/1/2012	23.49	229.918
9/1/2012	23.57	231.015
10/1/2012	23.56	231.638
11/1/2012	23.63	231.249
12/1/2012	23.73	231.221
1/1/2013	23.76	231.679
2/1/2013	23.77	232.937
3/1/2013	23.81	232.282
4/1/2013	23.87	231.797
5/1/2013	23.89	231.893
6/1/2013	23.97	232.445
7/1/2013	23.98	232.900
8/1/2013	24.03	233.456
9/1/2013	24.06	233.544
10/1/2013	24.09	233.669
11/1/2013	24.16	234.100
12/1/2013	24.17	234.719
1/1/2014	24.21	235.288
2/1/2014	24.32	235.547
3/1/2014	24.31	236.028
4/1/2014	24.34	236.468
5/1/2014	24.40	236.918
6/1/2014	24.44	237.231
7/1/2014	24.48	237.498
8/1/2014	24.55	237.460
9/1/2014	24.56	237.477
10/1/2014	24.58	237.430
11/1/2014	24.65	236.983
12/1/2014	24.65	236.252
1/1/2015	24.73	234.747
2/1/2015	24.78	235.342
3/1/2015	24.84	235.976
4/1/2015	24.89	236.222
5/1/2015	24.96	237.001
6/1/2015	24.98	237.657
7/1/2015	25.00	238.034
8/1/2015	25.10	238.033
9/1/2015	25.11	237.498
10/1/2015	25.19	237.733
11/1/2015	25.24	238.017
12/1/2015	25.27	237.761
1/1/2016	25.36	237.827
2/1/2016	25.38	237.514
3/1/2016	25.45	237.990
4/1/2016	25.53	238.835
5/1/2016	25.58	239.440
6/1/2016	25.63	240.144
7/1/2016	25.70	240.111
8/1/2016	25.72	240.595
9/1/2016	25.77	241.068
10/1/2016	25.88	241.641
11/1/2016	25.91	241.993
12/1/2016	25.94	242.712
1/1/2017	26.00	243.717
2/1/2017	26.08	244.028
3/1/2017	26.11	243.721
4/1/2017	26.17	244.058
5/1/2017	26.21	243.926
6/1/2017	26.27	244.179
7/1/2017	26.36	244.328
8/1/2017	26.38	245.304
9/1/2017	26.51	246.445
10/1/2017	26.48	246.570
11/1/2017	26.55	247.333
12/1/2017	26.64	247.847
1/1/2018	26.71	248.816
2/1/2018	26.75	249.475
3/1/2018	26.84	249.413
4/1/2018	26.91	249.957
5/1/2018	26.98	250.640
6/1/2018	27.04	251.176
7/1/2018	27.11	251.482
8/1/2018	27.22	251.905
9/1/2018	27.31	252.261
10/1/2018	27.36	252.777
11/1/2018	27.44	252.662
12/1/2018	27.54	252.653
1/1/2019	27.58	252.550
2/1/2019	27.69	253.181
3/1/2019	27.76	254.095
4/1/2019	27.81	254.943
5/1/2019	27.87	255.167
6/1/2019	27.96	255.402
7/1/2019	28.05	256.087
8/1/2019	28.16	256.294
9/1/2019	28.16	256.593
10/1/2019	28.24	257.229
11/1/2019	28.34	257.824
12/1/2019	28.37	258.444
1/1/2020	28.43	258.820
2/1/2020	28.52	259.050
3/1/2020	28.69	257.953