ð æè¿ç ããŠãŸããïŒæ¥æ¬äººã®ç¡ç äºæ ãçµ±èšã§èªã¿è§£ã
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1. ç¡ç ã®äœæ
ã倿Žãããå¢ããæ°ããããã
ãæè¿ãæãèŸããªããã
ãããªãµãã«æããããšã¯ãªãã§ããããã
æ¥æ¬äººã®ç¡ç æéã¯çãããšããèšãããŸãã
ã§ã¯å®éã®ãšãããç¡ç æéã¯ã©ã®ããã«å€åããŠããã®ã§ããããã
çµ±èšæ°å€ã§ç¢ºèªããŠã¿ãŸãããã
ððð
2. ç¡ç æéã®é·æãã¬ã³ã
ç·åçã®ç€ŸäŒçæŽ»åºæ¬èª¿æ»ã«ãããšã15æ³ä»¥äžã®å¹³åç¡ç æéã¯
1976幎㮠8æé05å
2016幎㮠7æé37å
ãŸã§ãé·æçã«æžå°ããŠããŸããã
ð çŽ40幎ã§çŽ30åã®æžå°ã§ãã
ãšããããããã§å°ãæå€ãªåãããããŸãã
2021幎ã®ç¡ç æé㯠7æé51åã2016幎ãã 14åå¢å ããŠããŸããã

ð å¯èŠåã®èªã¿è§£ã
ãã®ã°ã©ããèŠããšãããã€ãã®ç¹åŸŽãèŠããŠããŸãã
1976幎ãã1991幎é ãŸã§ã¯æ¯èŒçæ¥éã«æžå°
1996幎以éã¯æžå°ãããªãç·©ãã
ãããŠ2021幎ã¯ããããŸã§ã®æµãããäžã«äœçœ®ããŠããŸã
ð é·æçã«ã¯æžå°ããŠãããã2021幎ã«ã¯å¢å ãèšé²ããã
ãšããã®ãããŸãèŠããŠããäºå®ã§ãã
ððð
3. 幎霢å¥ã«èŠãŠã¿ã
次ã«ã2021幎ã®å¹Žéœ¢å¥ç¡ç æéãèŠãŠã¿ãŸãã

ð å¯èŠåã®èªã¿è§£ã
幎霢å¥ã«èŠããšãç¡ç æéã«ã¯ç¹åŸŽçãªåœ¢ãèŠããŸãã
è¥ãäžä»£ã§ã¯æ¯èŒçé·ã
40ã50代ã§çããªã
é«éœ¢å±€ã§åã³é·ããªã
ããšãã°2021幎ã§ã¯
20ã24æ³ïŒããã 8æé22å
50ã59æ³ïŒããã 7æé19å
70æ³ä»¥äžïŒããã 8æé23å
ãšãªã£ãŠããŸãã
ð äžå¹Žå±€ã§ç¡ç æéãçããªãåŸå ãèŠããŸãã
ððð
4. æ§å¥ã»å°±æ¥ç¶æ ã§ãèŠãŠã¿ã
æ§å¥ã§èŠããšãç¡ç æéã«ã¯å·®ããããŸããã幎霢差ã»ã©å€§ããã¯ãããŸããã

äžæ¹ãå°±æ¥ç¶æ ã§èŠããšãéãã¯ããå°ãã¯ã£ããããŠããŸãã

2021幎ã®å¹³åç¡ç æéã¯
ææ¥è ïŒ7æé39å
ç¡æ¥è ïŒ8æé12å
ã§ããã
ð ç¡æ¥è
ã®æ¹ã30å以äžé·ã ããšã«ãªããŸãã
ç¡æ¥è ã«ã¯é«éœ¢è ãå€ãå«ãŸãããšèããããŸãããããä»äºãç¡ç æéãæžãããŠããããšã¯æå®ã§ããªããããããŸããã
é«éœ¢è ã®å¹³åç¡ç æéãé·ããããç¡æ¥è ã®æéãé·ãã®ã
ç¡æ¥è ã®å¹³åç¡ç æéãé·ããããé«éœ¢è ã®æéãé·ãã®ã
ð å¹Žéœ¢æ§æã®éãã圱é¿ããŠããå¯èœæ§ãèããããŸãã
ããã§ããçæŽ»ã®æ¡ä»¶ã«ãã£ãŠç¡ç æéã«å·®ãããããšã¯ç¢ºãã§ãã
ððð
5. ã§ã¯ããªã2021幎ã«ã¯å¢ããã®ã
ãããŸã§èŠããšãã²ãšã€æ°ã«ãªãç¹ããããŸãã
é·æçã«ã¯æžã£ãŠããç¡ç æéãã
ãªã2021幎ã«ã¯å¢ããŠããã®ã§ããããã
2021幎ã¯ãæ°åã³ããã®åœ±é¿ã瀟äŒã«æ®ã£ãŠããææã§ãã
ç·åçã®ç€ŸäŒçæŽ»åºæ¬èª¿æ»ã§ã¯ã2016å¹Žãšæ¯ã¹ãŠ
ä»äºæéã¯æžå°
亀éã»ä»ãåãã®æéã¯æžå°
äŒé€ã»ãã€ããã®æéã¯å¢å
ãšãã£ãå€åã確èªãããŠããŸãã
ãŸãããã®ææã¯
åšå® å€åã®å¢å
é倿éã®æžå°
ãšãã£ãçæŽ»ã®å€åããããŸããã
ð çæŽ»æéã®é
åãã®ãã®ãå€ãã£ãŠãã ãšèŠãããšãã§ããŸãã
ð
æ°çã¢ãã«ã§åŸåãèŠãŠã¿ã
ããã§ã1976幎ãã2016幎ãŸã§ã®ããŒã¿ã ãã䜿ã£ãŠã
ãããŸã§ã®ç¡ç æéã®é·æçãªå€åãæ°åŒã§è¡šçŸããŠã¿ãŸãã
æžå°ã¯æ¬¡ç¬¬ã«ç·©ããã«ãªã£ãŠããããã
ããã§ã¯ äžéã«è¿ã¥ãå€å ãšããŠ ææ°æžè¡°ã¢ãã« ãåœãŠã¯ããŠã¿ãŸãã

ãã®åŒããæšå®ããã2021幎ã®ç¡ç æé㯠7æé38å ã§ããã
äžæ¹ãå®éã®2021幎ã®èŠ³æž¬å€ã¯ 7æé51å ã§ãã
ã€ãŸããå®éã®2021幎ã®ç¡ç æéã¯
ð é·æçãªæžå°åŸåããæšå®ãããå€ããçŽ13åé·ãã£ã
ããšã«ãªããŸãã
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6. 2026幎ã®ä»ã¯ã©ããªã®ã
2021幎ã®å¢å ãããã®åŸãç¶ããŠããã®ãã©ããã
瀟äŒçæŽ»åºæ¬èª¿æ»ã®æ°ããçµæãåºãŠããªãããããŸã åãããŸããã
ãã ã瀟äŒã®ç¶æ³ã¯2021幎ãšã¯å°ãå€ãã£ãŠããŸãã
ã³ããçŠã®ãããªåŒ·ãè¡åå¶éã¯ãªããªã£ã
åºç€Ÿååž°ã®åãããã
äžæ¹ã§ããã¬ã¯ãŒã¯ã¯ã³ããåããé«ãæ°Žæºã§æ®ã£ãŠãã
ã€ãŸãçŸåšã®åãæ¹ã¯
ð åºç€Ÿäžå¿ãžæ»ãã€ã€ãããããã¬ã¯ãŒã¯ãäžå®çšåºŠæ®ã£ãŠãã
ãšããç¶æ
ã«ãããŸãã
ãã®ããã2026幎ã®ç掻æéã¯
ð 2021幎ãšãã2016幎以åãšãå°ãéã圢
ã«ãªã£ãŠããå¯èœæ§ããããŸãã
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7. ä»å¹Žã®èª¿æ»ã§çãåãã
瀟äŒçæŽ»åºæ¬èª¿æ»ã¯ 5幎ããš ã«è¡ãããŸãã
ãã㊠2026幎ã¯èª¿æ»å¹Ž ã§ãã
ãšããããšã¯ã
2021幎ã®ç¡ç æéå¢å ã¯äžæçã ã£ãã®ã
çæŽ»ãªãºã ã®å€åãšããŠå®çããã®ã
ãã®çãã«è¿ã¥ãã幎ã§ããããŸãã
ð ä»å¹Ž 2026幎ã®çµæã¯ã2021幎ã®å€åãã©ãè§£éãããã®æãããã«ãªã
ãšèšãããã§ãã
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8. çµè«ãšäœçœ
çµ±èšã§èŠãŠã¿ããšã
æ¥æ¬äººã®ç¡ç æéã¯é·æçã«ã¯æžå°ããŠãã
ãã ãã2021幎ã«ã¯å¢å ãèšé²ãããŠãã
ãã®èæ¯ã«ã¯ãçæŽ»æéã®åé åããã£ãå¯èœæ§ããã
ãããŠããã®å€åãäžæçã ã£ãã®ãã©ããã¯ã2026幎ã®èª¿æ»ãæããŠããã
ãšããæµããèŠããŠããŸãã
ãæè¿ç ããŠããªãæ°ãããããšããå人ã®äœæã泚èŠãã€ã€ã瀟äŒå
šäœã®ååãèŠãŠã¿ããšãå°ãéã£ãæ¯è²ãèŠããŠãããããããŸããã
次ã®èª¿æ»çµæãåºããšããæ¥æ¬äººã®ç¡ç ã¯ã©ã¡ãã«åããŠããã®ãã
å°ã楜ãã¿ã§ããããŸãã
ððð
æ å ±æº
ç·åççµ±èšå±ïŒä»€å3幎瀟äŒçæŽ»åºæ¬èª¿æ»
https://www.e-stat.go.jp/stat-search/files?stat_infid=000032229318ç·åççµ±èšå±ïŒä»€å3幎瀟äŒçæŽ»åºæ¬èª¿æ» çµæã®æŠèŠ
https://www.stat.go.jp/data/shakai/2021/pdf/gaiyoua.pdfåœå亀éçïŒä»€å6幎床 ãã¬ã¯ãŒã¯äººå£å®æ 調æ»
https://www.mlit.go.jp/toshi/kankyo/telework_index.htmlJobç·ç 2025幎 åºç€Ÿååž°å®æ 調æ»
https://jobsoken.jp/info/20250127/
ïŒ2026幎3æ8æ¥ååŸïŒ
ããã
ãªã³ã¯ãšã³ãŒã
ã·ãªãŒãºèšäº
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åã®èšäº
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ððð
Python ã³ãŒã
èšäºã®å³è¡šã»çµ±èšæ°å€ãäœæãã Python ã³ãŒãã§ãã
ð¥ïž ã€ã³ããŒã
# ã€ã³ããŒã
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
plt.rcParams['font.family'] = 'Meiryo'ð¥ïž ããŒã¿ã®æºå
# ããŒã¿ã®ç»é²
# åŒçšå
ïŒä»€å3幎瀟äŒçæŽ»åºæ¬èª¿æ» / 調æ»ç¥šïŒ¡ã«åºã¥ãçµæ æç³»åçµ±èšè¡š
# ç·å¥³ããµã ãã®å°±æ¥ç¶æ
ã幎霢ãè¡åã®çš®é¡å¥ç·å¹³åæéã®æšç§»ïŒ10æ³ä»¥äžãé±å
šäœïŒ
# ïŒæå51幎ïœä»€åïŒå¹ŽïŒ
# https://www.e-stat.go.jp/stat-search/files?stat_infid=000032229318
# ç¡ç æéã®æšç§»
# 幎
years = np.array([1976, 1981, 1986, 1991, 1996, 2001, 2006, 2011, 2016, 2021])
# ç¡ç æéïŒ15æ³ä»¥äžã®å
šäœãç·æ§ã女æ§ã®ç·å¹³åæéïŒåïŒ
sleep_all = np.array([485, 477, 467, 462, 464, 462, 459, 459, 457, 471])
sleep_male = np.array([495, 486, 476, 470, 472, 469, 467, 466, 462, 476])
sleep_female = np.array([476, 468, 459, 454, 456, 455, 452, 453, 452, 467])
# ç¡ç æéïŒ15æ³ä»¥äžã®ææ¥è
ãç¡æ¥è
å¥ã®ç·å¹³åæéïŒåïŒ
sleep_work = np.array([481, 471, 460, 454, 455, 451, 446, 445, 443, 459])
sleep_nonwork = np.array([494, 489, 481, 477, 482, 482, 482, 482, 480, 492])
# ããŒã¿ãã¬ãŒã ã®äœæ
sleep_df = pd.DataFrame({
'year': years,
'ç·å¹³åæé': sleep_all,
'ç·æ§å¹³åæé': sleep_male,
'女æ§å¹³åæé': sleep_female,
'ææ¥è
å¹³åæé': sleep_work,
'ç¡æ¥è
å¹³åæé': sleep_nonwork,
})
display(sleep_df)
# ç¡ç æéïŒ2021幎ã®15æ³ä»¥äžã®å¹Žéœ¢éçŽå¥ã®å¹³åæéïŒåïŒ
sleep_2021_ages = np.array([
'15ïœ19æ³', '20ïœ24æ³', '25ïœ29æ³', '30ïœ39æ³', '40ïœ49æ³', '50ïœ59æ³',
'60ïœ64æ³', '65ïœ69æ³','70æ³ä»¥äž'
])
sleep_2021_mins = np.array([476, 502, 487, 477, 453, 439, 443, 455, 503])
# ããŒã¿ãã¬ãŒã ã®äœæ
sleep_2021_df = pd.DataFrame({
'幎代': sleep_2021_ages,
'å¹³åæé': sleep_2021_mins,
})
display(sleep_2021_df) index=pd.Series([2014, 2019, 2024], name='幎'))
data.Tãå®è¡çµæã

ð¥ïž ãã«ããŒé¢æ°ã®å®çŸ©
# ãã«ããŒé¢æ°
# åãæéãšåã®åœ¢åŒã«å€æãã颿°
def minutes_to_hm(v):
v = int(round(v))
return f'{v // 60}æé{v % 60:02d}å'
# ããããã®å
±éèšå®ãè¡ã颿°
def add_plot_settings(
ax, ylim=(430, 510), xlabel='幎', ylabel='å¹³åç¡ç æé', xticks=None
):
# 軞ã©ãã«
ax.set_xlabel(xlabel, fontsize=12)
ax.set_ylabel(ylabel, fontsize=12)
# 軞ã®ç®çããšã©ãã«
if xticks is not None:
ax.set_xticks(xticks)
ax.set_ylim(ylim)
# y軞ã®ç®çããæéãšåã®åœ¢åŒã«ãã
y_ticks = ax.get_yticks()
ax.set_yticks(y_ticks)
ax.set_yticklabels([minutes_to_hm(t) for t in y_ticks])ãå®è¡çµæããªã
ð¥ïž å³1ïŒ15æ³ä»¥äžã®ç¡ç æéã®æšç§»
# å³1ïŒ15æ³ä»¥äžã®ç¡ç æéã®æšç§»
fig, ax = plt.subplots(figsize=(8, 5))
ax.plot(sleep_df['year'], sleep_df['ç·å¹³åæé'], marker='o')
ax.set_title('15æ³ä»¥äžã®å¹³åç¡ç æéã®æšç§»')
ax.grid(alpha=0.5)
add_plot_settings(ax, xticks=years)ãå®è¡çµæã

ð¥ïž å³2ïŒ2021幎ã®å¹Žéœ¢éçŽå¥ç¡ç æé
# å³2ïŒ2021幎ã®å¹Žéœ¢éçŽå¥ç¡ç æé
fig, ax = plt.subplots(figsize=(8, 5))
ax.bar(sleep_2021_df['幎代'], sleep_2021_df['å¹³åæé'], alpha=0.7)
ax.set_title('2021幎ã®å¹Žéœ¢éçŽå¥å¹³åç¡ç æé')
add_plot_settings(ax, xlabel='幎霢éçŽ', ylabel='å¹³åç¡ç æé')
ax.grid(axis='y', alpha=0.5)
plt.show()ãå®è¡çµæã

ð¥ïž å³3. 15æ³ä»¥äžã®ç·å¥³å¥ç¡ç æéã®æšç§»
# å³3. 15æ³ä»¥äžã®ç·å¥³å¥ç¡ç æéã®æšç§»
fig, ax = plt.subplots(figsize=(8, 5))
ax.plot(sleep_df['year'], sleep_df['ç·æ§å¹³åæé'], marker='o', label='ç·æ§')
ax.plot(sleep_df['year'], sleep_df['女æ§å¹³åæé'], marker='s', label='女æ§')
ax.set_title('15æ³ä»¥äžã®ç·å¥³å¥å¹³åç¡ç æéã®æšç§»')
add_plot_settings(ax, xticks=years)
ax.grid(alpha=0.5)
ax.legend();ãå®è¡çµæã

ð¥ïž å³4. 15æ³ä»¥äžã®ææ¥è ã»ç¡æ¥è å¥ç¡ç æéã®æšç§»
# å³4. 15æ³ä»¥äžã®ææ¥è
ã»ç¡æ¥è
å¥ç¡ç æéã®æšç§»
fig, ax = plt.subplots(figsize=(8, 5))
ax.plot(sleep_df['year'], sleep_df['ææ¥è
å¹³åæé'], marker='o', label='ææ¥è
')
ax.plot(sleep_df['year'], sleep_df['ç¡æ¥è
å¹³åæé'], marker='s', label='ç¡æ¥è
')
ax.set_title('15æ³ä»¥äžã®ææ¥è
ã»ç¡æ¥è
å¥å¹³åç¡ç æéã®æšç§»')
ax.grid(alpha=0.5)
add_plot_settings(ax, xticks=years)
ax.legend();ãå®è¡çµæã

ð¥ïž ææ°æžè¡°ã¢ãã«ã®åŠç¿ãšå³5 15æ³ä»¥äžã®å¹³åç¡ç æéïœã®æç»
# 2021幎ã®äºæž¬ïŒææ°æžè¡°ã¢ãã«ã«ãããã£ããã£ã³ã°
# 远å ã€ã³ããŒã
from scipy.optimize import curve_fit
# ããŒã¿ã®æºåïŒ1976幎ããã®çµé幎æ°ã«å€æãããšåæããããïŒ
x_data = sleep_df['year'].values[:-1] - 1976 # 1976幎ããã®çµé幎æ°
y_data = sleep_df['ç·å¹³åæé'].values[:-1] # 2021幎ã¯äºæž¬ã«äœ¿ãããé€å€
sleep_2021 = sleep_df['ç·å¹³åæé'].iloc[-1] # 2021幎ã®èŠ³æž¬å€
# ææ°æžè¡°é¢æ°ã®å®çŸ© params = a: åæå€åéãb: æžè¡°ä¿æ°ãc: åæå€
def model_func(x, a, b, c):
return a * np.exp(-b * x) + c
# ãã£ããã£ã³ã°
popt, pcov = curve_fit(model_func, x_data, y_data, p0=[30, 0.1, 450])
print(f'ãã©ã¡ãŒã¿æšå®å€ãã: a={popt[0]:.2f}, b={popt[1]:.4f}, c={popt[2]:.2f}')
# ãã£ããã£ã³ã°æ²ç·æç»çšã®äºæž¬å€ã®èšç®
x_fit = np.arange(0, 50) # 1976幎ãã50幎åã®äºæž¬
y_fit = model_func(x_fit, *popt)
# 2021幎ã®äºæž¬å€ã®èšç®
x_2021 = 2021 - 1976
y_2021_pred = model_func(x_2021, *popt)
print(f'2021幎ã®äºæž¬ç¡ç æé: {y_2021_pred:.2f}å')
print(f'2021幎ã®äºæž¬èª€å·®ãã: {abs(y_2021_pred - sleep_2021):.2f}å')
# ãã£ããã£ã³ã°çµæã®ããããïŒå³5 15æ³ä»¥äžã®å¹³åç¡ç æéã®ãã£ããã£ã³ã°
fig, ax = plt.subplots(figsize=(8, 5))
ax.plot(1976 + x_data, y_data, '-o', label='芳枬å€')
ax.plot(1976 + x_fit, y_fit, color='tab:red', label='ãã£ããã£ã³ã°æ²ç·', zorder=0)
ax.scatter(2021, sleep_2021, s=80, color='tab:blue', label='2021幎芳枬å€')
ax.scatter(2021, y_2021_pred, s=80, color='tab:red', label='2021å¹Žäºæž¬å€')
ax.set_title('15æ³ä»¥äžã®å¹³åç¡ç æéã®ãã£ããã£ã³ã°ïŒææ°æžè¡°ã¢ãã«')
add_plot_settings(ax, ylim=(450, 490), xticks=years)
ax.grid(alpha=0.5)
ax.legend();ãå®è¡çµæã


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